Dag Roar Hjelme
Om
Undervisning
TFE4166 Fotonikk II (vår)
TFE4202 Sensorsystemer - design 1 (høst)
TFE4204 Sensorsystemer - design 2 (vår)
Publikasjoner
2024
-
Jerve, Fredrik Wilsbeck;
Hjelme, Dag Roar;
Kalvøy, Håvard;
Allen, John;
Tronstad, Christian.
(2024)
Exploration of the Conditions for Occurrence of Photoplethysmographic Signal Inversion above the Dorsalis Pedis Artery.
Sensors
Vitenskapelig artikkel
2023
-
Grayson, Michael;
Krueper, Greg;
Xu, Bo;
Zohrabi, Mo;
Hjelme, Dag Roar;
Gopinath, Juliet.
(2023)
On-chip mid-infrared optical sensing with GeSbSe waveguides and resonators.
Optics Express
Vitenskapelig artikkel
-
Urban, David;
Marcucci, Niccolò;
Wölfle, Christoph Hubertus;
Torgersen, Jan;
Hjelme, Dag Roar;
Descrovi, Emiliano.
(2023)
Polarization-driven reversible actuation in a photo-responsive polymer composite.
Nature Communications
Vitenskapelig artikkel
2022
-
Urban, David;
Hjelme, Dag Roar;
Descrovi, Emiliano.
(2022)
Polarized light guiding anisotropic deformation and relaxation in photosensitive polymeric substrates .
The European Physical Journal Conferences
Sammendrag/abstract
-
Schwermer, Silje Fuglerud;
Hjelme, Dag Roar;
Aksnes, Astrid;
Milenko, Karolina Barbara.
(2022)
Near Infrared Spectroscopy for Continuous Glucose Monitoring.
Doctoral theses at NTNU (184)
Doktorgradsavhandling
-
Schwermer, Silje Fuglerud;
Noh, Jong Wook;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2022)
Performance improvement in a supercontinuum fiber-coupled system for near infrared absorption spectroscopy.
Applied Optics
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2022)
Sensor Technology Options for Municipal Solid Waste Characterization for Optimal Operation of Waste-to-Energy Plants.
Energies
Vitenskapelig artikkel
2021
-
Osinski, Dominik;
Łukowska, Marta;
Hjelme, Dag Roar;
Michał, Wierzchoń.
(2021)
Colorophone 2.0: A Wearable Color Sonification Device Generating Live Stereo-Soundscapes—Design, Implementation, and Usability Audit .
Sensors
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2021)
Investigation of the effect of clinically relevant interferents on glucose monitoring using near‐infrared spectroscopy.
Journal of Biophotonics
Vitenskapelig artikkel
-
Milenko, Karolina Barbara;
Yerolatsitis, Stephanos;
Aksnes, Astrid;
Hjelme, Dag Roar;
Stone, James M..
(2021)
Micro-lensed negative-curvature fibre probe for raman spectroscopy.
Sensors
Vitenskapelig artikkel
-
Yadav, Mukesh;
Noh, Jong Wook;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2021)
Spectral shaping of ring resonator transmission response.
Optics Express
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2021)
Classification of municipal solid waste using deep convolutional neural network model applied to multispectral images.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
2020
-
Muri, Harald Ian;
Wahl, Markus Solberg;
Lamb, Jacob Joseph;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Sensor fusion.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Muri, Harald Ian;
Snilsberg, Rolf Kristian;
Lamb, Jacob Joseph;
Hjelme, Dag Roar.
(2020)
Temperature and humidity measurements.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Lamb, Jacob Joseph;
Burheim, Odne Stokke;
Hjelme, Dag Roar.
(2020)
Introduction.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Muri, Harald Ian;
Lamb, Jacob Joseph;
Wahl, Markus Solberg;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Hydrogen gas measurements.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Lamb, Jacob Joseph;
Muri, Harald Ian;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Light properties and sensors.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2020)
Using Fiber-Optic Sensors to Give Insight into Liquid-Solid Phase Transitions in Pure Fluids and Mixtures.
Experimental Thermal and Fluid Science
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2020)
Surface-Enhanced Absorption Spectroscopy for Optical Fiber Sensing.
Materials
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Strøm, Karina;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Mid-infrared spectroscopy with a fiber-coupled tuneable quantum cascade laser for glucose sensing.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Wahl, Markus Solberg;
Aasen, Ailo;
Hjelme, Dag Roar;
Wilhelmsen, Øivind.
(2020)
Ice formation and growth in supercooled water–alcohol mixtures: Theory and experiments with dual fiber sensors.
Fluid Phase Equilibria
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Høvik, Jens;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Signal enhancement in microstructured silicon attenuated total reflection elements with quantum cascade laser-based spectroscopy.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Infrared measurements of glucose in peritoneal fluid with a tuneable quantum cascade laser.
Biomedical Optics Express
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Matsuura, Yuji;
Aksnes, Astrid.
(2020)
Convolutional neural networks for classification and regression analysis of one-dimensional spectral data.
arXiv.org
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Mid-Infrared Tuneable Laser Spectroscopy for Glucose Sensing.
Doktoravhandlinger ved NTNU (ISSN 1503-8181)
Doktorgradsavhandling
-
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Aksnes, Astrid;
Ellingsen, Reinold;
Hjelme, Dag Roar.
(2020)
Optimization of SERS Sensing With Micro-Lensed Optical Fibers and Au Nano-Film.
Journal of Lightwave Technology
Vitenskapelig artikkel
2019
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2019)
Glucose sensing by absorption spectroscopy using lensed optical fibers.
Applied Optics
Vitenskapelig artikkel
-
Sarker, Shiplu;
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2019)
A review of the role of critical parameters in the design and operation of biogas production plants.
Applied Sciences
Vitenskapelig oversiktsartikkel/review
-
Lamb, Jacob Joseph;
Bernard, Olivier;
Sarker, Shiplu;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Perspectives of optical colourimetric sensors for anaerobic digestion.
Renewable and Sustainable Energy Reviews
Vitenskapelig oversiktsartikkel/review
-
Lamb, Jacob Joseph;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Digitalization of colourimetric sensor arrays for volatile fatty acid detection in anaerobic digestion.
MethodsX
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Islam, Md Hujjatul;
Hjelme, Dag Roar;
Pollet, Bruno;
Lien, Kristian Myklebust.
(2019)
Effect of power ultrasound and Fenton reagents on the biomethane potential from steam-exploded birchwood.
Ultrasonics sonochemistry
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Bernard, Olivier;
Sarker, Shiplu;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Perspectives of surface plasmon resonance sensors for optimized biogas methanation.
Engineering in Life Sciences
Vitenskapelig oversiktsartikkel/review
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2019)
Addressing Challenges in Fabricating Reflection-Based Fiber Optic Interferometers.
Sensors
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2019)
Carbohydrate Yield and Biomethane Potential from Enzymatically Hydrolysed Saccharina latissima and Its Industrial Potential.
Advances in microbiology
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2019)
Feasibility of supercontinuum sources for use in glucose sensing by absorption spectroscopy.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Åm, Marte Kierulf;
Fougner, Anders Lyngvi;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Bösch, Patrick Christian;
Stavdahl, Øyvind.
(2019)
Why intraperitoneal glucose sensing is sometimes surprisingly rapid and sometimes slow: A hypothesis
.
Medical Hypotheses
Vitenskapelig artikkel
-
Åm, Marte Kierulf;
Fougner, Anders Lyngvi;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Bösch, Patrick Christian;
Stavdahl, Øyvind.
(2019)
Erratum to “Why intraperitoneal glucose sensing is sometimes surprisingly rapid and sometimes slow: A hypothesis” [Med. Hypotheses 132 (2019) 109318].
Medical Hypotheses
Errata
-
Jernelv, Ine Larsen;
Strøm, Karina;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2019)
Infrared Spectroscopy with a Fiber-Coupled Quantum Cascade Laser for Attenuated Total Reflection Measurements Towards Biomedical Applications.
Sensors
Vitenskapelig artikkel
2018
-
Sarker, Shiplu;
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2018)
Overview of recent progress towards in-situ biogas upgradation techniques.
Fuel
Vitenskapelig oversiktsartikkel/review
-
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Kjeldby, Snorre Braathen;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2018)
Micro-lensed optical fibers for a surface-enhanced Raman scattering sensing probe.
Optics Letters
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hoang, Linh;
Hjelme, Dag Roar.
(2018)
Mapping nanoparticles in hydrogels: A comparison of preparation methods for electron microscopy.
Applied Sciences
Vitenskapelig artikkel
-
saldana, diego sanchez;
Hjelme, Dag Roar.
(2018)
online sensor concept for municipal solid waste characterization review.
NTNU and ENERSENSE
Rapport
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2018)
LSPR and Interferometric Sensor Modalities Combined Using a Double-Clad Optical Fiber.
Sensors
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2018)
A single-point, multiparameter, fiber optic sensor based on a combination of interferometry and LSPR.
Journal of Lightwave Technology
Vitenskapelig artikkel
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2018)
Combined temperature and RI sensor for exploring the phase transitions of ethanol solutions.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Milenko, Karolina Barbara;
Larsen Jernelv, Ine;
Fuglerud, Silje Skeide;
Aksnes, Astrid;
Ellingsen, Reinold;
Hjelme, Dag Roar.
(2018)
Towards Fiber-Optic Raman Spectroscopy for Glucose Sensing.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen Jernelv, Ine;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2018)
Improving Multivariate Analysis in Mid-Infrared Spectroscopy for Biosensing.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Jernelv, Ine Larsen;
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Hjelme, Dag Roar;
Ellingsen, Reinold;
Aksnes, Astrid.
(2018)
A review of optical methods for continuous glucose monitoring.
Applied spectroscopy reviews (Softcover ed.)
Vitenskapelig oversiktsartikkel/review
-
Åm, Marte Kierulf;
Kölle, Konstanze;
Fougner, Anders Lyngvi;
Dirnena-Fusini, Ilze;
Bösch, Patrick Christian;
Ellingsen, Reinold.
(2018)
Effect of sensor location on continuous intraperitoneal glucose sensing in an animal model.
PLOS ONE
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Sarker, Shiplu;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2018)
Fermentative Bioethanol Production Using Enzymatically Hydrolysed Saccharina latissima.
Advances in microbiology
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Larsen Jernelv, Ine;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2018)
A miniaturized ball-lensed fiber optic NIR transmission spectroscopy-based glucose sensor.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Yadav, Mukesh;
Høvik, Jens;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2018)
Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
2017
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2017)
LSPR Coupling and Distribution of Interparticle Distances between Nanoparticles in Hydrogel on Optical Fiber End Face.
Sensors
Vitenskapelig artikkel
-
Hammarling, Krister;
Engholm, Magnus;
Muri, Harald Ian;
Wahl, Markus Solberg;
Hjelme, Dag Roar.
(2017)
Dual parameter fiber optic sensor combining a Fabry-Perot and a Mach-Zehnder interferometer.
Proceedings of IEEE Sensors
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2017)
Interferometric and localized surface plasmon based fiber optic sensor.
Progress in Biomedical Optics and Imaging
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2017)
First step towards an interferometric and localized surface plasmon fiber optic sensor.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
2016
-
Bartholsen, Ingebrigt;
Hjelme, Dag Roar.
(2016)
Fast and accurate read-out of interferometric optical fiber sensors.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Muri, Ian;
Hjelme, Dag Roar.
(2016)
Novel localized surface plasmon resonance based optical fiber sensor.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Fougner, Anders Lyngvi;
Kölle, Konstanze;
Skjaervold, Nils Kristian;
Elvemo, Nicolas-Andreas L.;
Hjelme, Dag Roar;
Ellingsen, Reinold.
(2016)
Intraperitoneal Glucose Sensing is Sometimes Surprisingly Rapid.
MIC Journal: Modeling, Identification and Control
Vitenskapelig artikkel
2015
-
Strømstad, Håkon Grøn;
Hjelme, Dag Roar.
(2015)
Low-cost high performance readout system for fiber-optic biosensors.
Progress in Biomedical Optics and Imaging
Vitenskapelig artikkel
2014
-
Eriksen, Anders;
Osinski, Dominik;
Hjelme, Dag Roar.
(2014)
Evaluation of thermal imaging system and thermal radiation detector for real-time condition monitoring of high power frequency converters.
Advances in Manufacturing
Vitenskapelig artikkel
2013
-
Eriksen, Anders;
Osinski, Dominik;
Hjelme, Dag Roar.
(2013)
Evaluation of thermal imaging system and thermal radiation detector for real-time condition monitoring of highpower frequency converters.
NTNU Engineering Series
Vitenskapelig artikkel
-
Skjaervold, Nils Kristian;
Østling, Dan;
Hjelme, Dag Roar;
Spigset, Olav;
Lyng, Oddveig;
Aadahl, Petter.
(2013)
Blood Glucose Control Using a Novel Continuous Blood Glucose Monitor and Repetitive Intravenous Insulin Boluses: Exploiting Natural Insulin Pulsatility as a Principle for a Future Artificial Pancreas.
International Journal of Endocrinology
Vitenskapelig artikkel
-
Veisllari, Raimena;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2013)
Experimental demonstration of high throughput, ultra-low delay variation packet/circuit fusion network.
Electronics Letters
Vitenskapelig artikkel
2011
-
Skjærvold, Nils Kristian;
Solligård, Erik;
Hjelme, Dag Roar;
Aadahl, Petter.
(2011)
Continuous Measurement of Blood Glucose Validation of a New Intravascular Sensor.
Anesthesiology
Vitenskapelig artikkel
-
Hjelme, Dag Roar;
Lydersen, Lars Vincent Van de Wiel;
Makarov, Vadim.
(2011)
Quantum Cryptography.
CRC Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2010
-
Tuft, Vegard Larsen;
Hjelme, Dag Roar;
Bjørnstad, Steinar.
(2010)
Automatic Polarization Control With Packet Transmission and the Effect of Traffic Patterns.
Journal of Lightwave Technology
Vitenskapelig artikkel
2009
-
Tierney, Sven;
Falch, Berit H.;
Hjelme, Dag Roar;
Stokke, Bjørn Torger.
(2009)
Determination of Glucose Levels Using a Functionalized Hydrogel-Optical Fiber Biosensor: Toward Continuous Monitoring of Blood Glucose in Vivo.
Analytical Chemistry
Vitenskapelig artikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2009)
Effect of traffic patterns on automatic polarization control with polarization and time-division multiplexed optical packet transmission.
Journal of Optical Networking
Vitenskapelig artikkel
2008
-
Tierney, Sven;
Hjelme, DR;
Stokke, Bjørn Torger.
(2008)
Determination of swelling of responsive gels with nanometer resolution. Fiber-optic based platform for hydrogels as signal transducers.
Analytical Chemistry
Vitenskapelig artikkel
2007
-
Bjørnstad, Steinar;
Nord, Martin;
Eriksen, Lars Erik;
Tuft, Vegard Larsen;
Hjelme, Dag Roar;
Stol, Norvald.
(2007)
Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen, Eivind La Puebla;
Randeberg, Lise Lyngsnes;
Gederaas, Odrun Arna;
Krokan, Hans Einar;
Hjelme, Dag Roar;
Svaasand, Lars O..
(2007)
In vitro study on methemoglobin formation in erythrocytes following hexyl-aminolevulinate induced photodynamic therapy.
SPIE - The International Society for Optics and Photonics
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2007)
Automatic polarization control for packet transmission in a hybrid circuit and packet switched optical network.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
2006
-
Larsen, Eivind La Puebla;
Randeberg, Lise Lyngsnes;
Gederaas, Odrun Arna;
Arum, Carl-Jørgen;
Krokan, Hans Einar;
Chen, Duan.
(2006)
Monitoring of hALA induced PDT in rat bladder cancer by optical spectroscopy.
Lasers in Surgery and Medicine
Sammendrag/abstract
-
Bjørnstad, Steinar;
Hjelme, Dag Roar;
Stol, Norvald.
(2006)
A Packet-Switched Hybrid Optical Network with Service Guarantees.
IEEE Journal on Selected Areas in Communications
Vitenskapelig artikkel
-
Nord, Martin;
Bjornstad, Steinar;
Bjørnstad, Steinar;
Austad, Oddgeir;
Tuft, Vegard Larsen;
Hjelme, Dag Roar.
(2006)
OpMiGua Hybrid Circuit- and Packet-Switched Test-Bed Demonstration and Performance.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
-
Nord, Martin;
Bjørnstad, Steinar;
Tuft, Vegard;
Kimsås, Andreas;
Hjelme, Dag Roar;
Eriksen, Lars Erik.
(2006)
The OpMiGua project - final report.
Telenor FoU report (Rxx)
Rapport
-
Tuft, Vegard Larsen;
Buron, Jakob;
Hjelme, Dag Roar;
Bjørnstad, Steinar.
(2006)
Demonstration of an All-Optical Class-of-Service Segregation Method for Edge Nodes in Hybrid Circuit/Packet Switched Networks.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bjørnstad, Steinar;
Nord, Martin;
Tuft, Vegard Larsen;
Austad, Oddgeir;
Hjelme, Dag Roar;
Eriksen, Lars Erik.
(2006)
Experimental Demonstration of OpMiGua Hybrid Circuit/Packet Nodes.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tuft, Vegard Larsen;
Hjelme, Dag Roar.
(2006)
The Effect of PDL in a Polarization and Time Division Multiplexed Scheme for All-Optical Class of Service Segregation.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bjørnstad, Steinar;
Eriksen, Lars Erik;
Hjelme, Dag Roar.
(2006)
The OpMiGua multiservice optical hybrid packet/circuit switched network supporting TV-broadcasting QoS requirements.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Nord, Martin;
Bjørnstad, Steinar;
Austad, Oddgeir;
Tuft, Vegard;
Hjelme, Dag roar;
Sudbø, Aasmund Sveinung.
(2006)
Hybrid circuit- and packet switched test-bed.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
2005
-
Makarov, Vadim;
Hjelme, Dag Roar.
(2005)
Faked states attack on quantum cryptosystems.
Journal of Modern Optics
Vitenskapelig artikkel
-
Bjørnstad, Steinar;
Nord, Martin;
Olsen, Torodd;
Hjelme, Dag Roar;
Stol, Norvald.
(2005)
Burst, packet and hybrid switching in the optical core network.
Telektronikk
Vitenskapelig artikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2005)
Time Interleaved Polarization Multiplexing for Polarization Labelling.
Annet
-
Bjørnstad, Steinar;
Øverby, Harald;
Stol, Norvald;
Hjelme, Dag Roar.
(2005)
Protecting guaranteed service traffic in an OpMiGua hybrid network.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2004
-
Makarov, Vadim;
Brylevski, Alexey;
Hjelme, Dag Roar.
(2004)
Real-time phase tracking in single-photon interferometers.
Applied Optics
Vitenskapelig artikkel
2001
-
Vakhitov, Artem;
Makarov, Vadim;
Hjelme, Dag Roar.
(2001)
Large pulse attack as a method of conventional optical eavesdropping in quantum cryptography.
Journal of Modern Optics
Vitenskapelig artikkel
1998
-
Hjelme, Dag Roar;
Storøy, Helge;
Skaar, Johannes.
(1998)
Reconfigurable all-optical crossconnect node using synthesized fiber Bragg gratings for both demultiplexing and switching.
OSA Trends in Optics and Photonics
Vitenskapelig artikkel
Tidsskriftspublikasjoner
-
Jerve, Fredrik Wilsbeck;
Hjelme, Dag Roar;
Kalvøy, Håvard;
Allen, John;
Tronstad, Christian.
(2024)
Exploration of the Conditions for Occurrence of Photoplethysmographic Signal Inversion above the Dorsalis Pedis Artery.
Sensors
Vitenskapelig artikkel
-
Grayson, Michael;
Krueper, Greg;
Xu, Bo;
Zohrabi, Mo;
Hjelme, Dag Roar;
Gopinath, Juliet.
(2023)
On-chip mid-infrared optical sensing with GeSbSe waveguides and resonators.
Optics Express
Vitenskapelig artikkel
-
Urban, David;
Marcucci, Niccolò;
Wölfle, Christoph Hubertus;
Torgersen, Jan;
Hjelme, Dag Roar;
Descrovi, Emiliano.
(2023)
Polarization-driven reversible actuation in a photo-responsive polymer composite.
Nature Communications
Vitenskapelig artikkel
-
Urban, David;
Hjelme, Dag Roar;
Descrovi, Emiliano.
(2022)
Polarized light guiding anisotropic deformation and relaxation in photosensitive polymeric substrates .
The European Physical Journal Conferences
Sammendrag/abstract
-
Schwermer, Silje Fuglerud;
Noh, Jong Wook;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2022)
Performance improvement in a supercontinuum fiber-coupled system for near infrared absorption spectroscopy.
Applied Optics
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2022)
Sensor Technology Options for Municipal Solid Waste Characterization for Optimal Operation of Waste-to-Energy Plants.
Energies
Vitenskapelig artikkel
-
Osinski, Dominik;
Łukowska, Marta;
Hjelme, Dag Roar;
Michał, Wierzchoń.
(2021)
Colorophone 2.0: A Wearable Color Sonification Device Generating Live Stereo-Soundscapes—Design, Implementation, and Usability Audit .
Sensors
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2021)
Investigation of the effect of clinically relevant interferents on glucose monitoring using near‐infrared spectroscopy.
Journal of Biophotonics
Vitenskapelig artikkel
-
Milenko, Karolina Barbara;
Yerolatsitis, Stephanos;
Aksnes, Astrid;
Hjelme, Dag Roar;
Stone, James M..
(2021)
Micro-lensed negative-curvature fibre probe for raman spectroscopy.
Sensors
Vitenskapelig artikkel
-
Yadav, Mukesh;
Noh, Jong Wook;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2021)
Spectral shaping of ring resonator transmission response.
Optics Express
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2021)
Classification of municipal solid waste using deep convolutional neural network model applied to multispectral images.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2020)
Using Fiber-Optic Sensors to Give Insight into Liquid-Solid Phase Transitions in Pure Fluids and Mixtures.
Experimental Thermal and Fluid Science
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2020)
Surface-Enhanced Absorption Spectroscopy for Optical Fiber Sensing.
Materials
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Strøm, Karina;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Mid-infrared spectroscopy with a fiber-coupled tuneable quantum cascade laser for glucose sensing.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Wahl, Markus Solberg;
Aasen, Ailo;
Hjelme, Dag Roar;
Wilhelmsen, Øivind.
(2020)
Ice formation and growth in supercooled water–alcohol mixtures: Theory and experiments with dual fiber sensors.
Fluid Phase Equilibria
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Høvik, Jens;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Signal enhancement in microstructured silicon attenuated total reflection elements with quantum cascade laser-based spectroscopy.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Infrared measurements of glucose in peritoneal fluid with a tuneable quantum cascade laser.
Biomedical Optics Express
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Matsuura, Yuji;
Aksnes, Astrid.
(2020)
Convolutional neural networks for classification and regression analysis of one-dimensional spectral data.
arXiv.org
Vitenskapelig artikkel
-
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Aksnes, Astrid;
Ellingsen, Reinold;
Hjelme, Dag Roar.
(2020)
Optimization of SERS Sensing With Micro-Lensed Optical Fibers and Au Nano-Film.
Journal of Lightwave Technology
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2019)
Glucose sensing by absorption spectroscopy using lensed optical fibers.
Applied Optics
Vitenskapelig artikkel
-
Sarker, Shiplu;
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2019)
A review of the role of critical parameters in the design and operation of biogas production plants.
Applied Sciences
Vitenskapelig oversiktsartikkel/review
-
Lamb, Jacob Joseph;
Bernard, Olivier;
Sarker, Shiplu;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Perspectives of optical colourimetric sensors for anaerobic digestion.
Renewable and Sustainable Energy Reviews
Vitenskapelig oversiktsartikkel/review
-
Lamb, Jacob Joseph;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Digitalization of colourimetric sensor arrays for volatile fatty acid detection in anaerobic digestion.
MethodsX
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Islam, Md Hujjatul;
Hjelme, Dag Roar;
Pollet, Bruno;
Lien, Kristian Myklebust.
(2019)
Effect of power ultrasound and Fenton reagents on the biomethane potential from steam-exploded birchwood.
Ultrasonics sonochemistry
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Bernard, Olivier;
Sarker, Shiplu;
Lien, Kristian Myklebust;
Hjelme, Dag Roar.
(2019)
Perspectives of surface plasmon resonance sensors for optimized biogas methanation.
Engineering in Life Sciences
Vitenskapelig oversiktsartikkel/review
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2019)
Addressing Challenges in Fabricating Reflection-Based Fiber Optic Interferometers.
Sensors
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2019)
Carbohydrate Yield and Biomethane Potential from Enzymatically Hydrolysed Saccharina latissima and Its Industrial Potential.
Advances in microbiology
Vitenskapelig artikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2019)
Feasibility of supercontinuum sources for use in glucose sensing by absorption spectroscopy.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Åm, Marte Kierulf;
Fougner, Anders Lyngvi;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Bösch, Patrick Christian;
Stavdahl, Øyvind.
(2019)
Why intraperitoneal glucose sensing is sometimes surprisingly rapid and sometimes slow: A hypothesis
.
Medical Hypotheses
Vitenskapelig artikkel
-
Åm, Marte Kierulf;
Fougner, Anders Lyngvi;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Bösch, Patrick Christian;
Stavdahl, Øyvind.
(2019)
Erratum to “Why intraperitoneal glucose sensing is sometimes surprisingly rapid and sometimes slow: A hypothesis” [Med. Hypotheses 132 (2019) 109318].
Medical Hypotheses
Errata
-
Jernelv, Ine Larsen;
Strøm, Karina;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2019)
Infrared Spectroscopy with a Fiber-Coupled Quantum Cascade Laser for Attenuated Total Reflection Measurements Towards Biomedical Applications.
Sensors
Vitenskapelig artikkel
-
Sarker, Shiplu;
Lamb, Jacob Joseph;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2018)
Overview of recent progress towards in-situ biogas upgradation techniques.
Fuel
Vitenskapelig oversiktsartikkel/review
-
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Kjeldby, Snorre Braathen;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2018)
Micro-lensed optical fibers for a surface-enhanced Raman scattering sensing probe.
Optics Letters
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hoang, Linh;
Hjelme, Dag Roar.
(2018)
Mapping nanoparticles in hydrogels: A comparison of preparation methods for electron microscopy.
Applied Sciences
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2018)
LSPR and Interferometric Sensor Modalities Combined Using a Double-Clad Optical Fiber.
Sensors
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2018)
A single-point, multiparameter, fiber optic sensor based on a combination of interferometry and LSPR.
Journal of Lightwave Technology
Vitenskapelig artikkel
-
Jernelv, Ine Larsen;
Milenko, Karolina Barbara;
Fuglerud, Silje Skeide;
Hjelme, Dag Roar;
Ellingsen, Reinold;
Aksnes, Astrid.
(2018)
A review of optical methods for continuous glucose monitoring.
Applied spectroscopy reviews (Softcover ed.)
Vitenskapelig oversiktsartikkel/review
-
Åm, Marte Kierulf;
Kölle, Konstanze;
Fougner, Anders Lyngvi;
Dirnena-Fusini, Ilze;
Bösch, Patrick Christian;
Ellingsen, Reinold.
(2018)
Effect of sensor location on continuous intraperitoneal glucose sensing in an animal model.
PLOS ONE
Vitenskapelig artikkel
-
Lamb, Jacob Joseph;
Sarker, Shiplu;
Hjelme, Dag Roar;
Lien, Kristian Myklebust.
(2018)
Fermentative Bioethanol Production Using Enzymatically Hydrolysed Saccharina latissima.
Advances in microbiology
Vitenskapelig artikkel
-
Yadav, Mukesh;
Høvik, Jens;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2018)
Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Muri, Harald Ian;
Hjelme, Dag Roar.
(2017)
LSPR Coupling and Distribution of Interparticle Distances between Nanoparticles in Hydrogel on Optical Fiber End Face.
Sensors
Vitenskapelig artikkel
-
Hammarling, Krister;
Engholm, Magnus;
Muri, Harald Ian;
Wahl, Markus Solberg;
Hjelme, Dag Roar.
(2017)
Dual parameter fiber optic sensor combining a Fabry-Perot and a Mach-Zehnder interferometer.
Proceedings of IEEE Sensors
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2017)
Interferometric and localized surface plasmon based fiber optic sensor.
Progress in Biomedical Optics and Imaging
Vitenskapelig artikkel
-
Muri, Harald Ian;
Bano, Andon;
Hjelme, Dag Roar.
(2017)
First step towards an interferometric and localized surface plasmon fiber optic sensor.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Bartholsen, Ingebrigt;
Hjelme, Dag Roar.
(2016)
Fast and accurate read-out of interferometric optical fiber sensors.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Muri, Ian;
Hjelme, Dag Roar.
(2016)
Novel localized surface plasmon resonance based optical fiber sensor.
Proceedings of SPIE, the International Society for Optical Engineering
Vitenskapelig artikkel
-
Fougner, Anders Lyngvi;
Kölle, Konstanze;
Skjaervold, Nils Kristian;
Elvemo, Nicolas-Andreas L.;
Hjelme, Dag Roar;
Ellingsen, Reinold.
(2016)
Intraperitoneal Glucose Sensing is Sometimes Surprisingly Rapid.
MIC Journal: Modeling, Identification and Control
Vitenskapelig artikkel
-
Strømstad, Håkon Grøn;
Hjelme, Dag Roar.
(2015)
Low-cost high performance readout system for fiber-optic biosensors.
Progress in Biomedical Optics and Imaging
Vitenskapelig artikkel
-
Eriksen, Anders;
Osinski, Dominik;
Hjelme, Dag Roar.
(2014)
Evaluation of thermal imaging system and thermal radiation detector for real-time condition monitoring of high power frequency converters.
Advances in Manufacturing
Vitenskapelig artikkel
-
Eriksen, Anders;
Osinski, Dominik;
Hjelme, Dag Roar.
(2013)
Evaluation of thermal imaging system and thermal radiation detector for real-time condition monitoring of highpower frequency converters.
NTNU Engineering Series
Vitenskapelig artikkel
-
Skjaervold, Nils Kristian;
Østling, Dan;
Hjelme, Dag Roar;
Spigset, Olav;
Lyng, Oddveig;
Aadahl, Petter.
(2013)
Blood Glucose Control Using a Novel Continuous Blood Glucose Monitor and Repetitive Intravenous Insulin Boluses: Exploiting Natural Insulin Pulsatility as a Principle for a Future Artificial Pancreas.
International Journal of Endocrinology
Vitenskapelig artikkel
-
Veisllari, Raimena;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2013)
Experimental demonstration of high throughput, ultra-low delay variation packet/circuit fusion network.
Electronics Letters
Vitenskapelig artikkel
-
Skjærvold, Nils Kristian;
Solligård, Erik;
Hjelme, Dag Roar;
Aadahl, Petter.
(2011)
Continuous Measurement of Blood Glucose Validation of a New Intravascular Sensor.
Anesthesiology
Vitenskapelig artikkel
-
Tuft, Vegard Larsen;
Hjelme, Dag Roar;
Bjørnstad, Steinar.
(2010)
Automatic Polarization Control With Packet Transmission and the Effect of Traffic Patterns.
Journal of Lightwave Technology
Vitenskapelig artikkel
-
Tierney, Sven;
Falch, Berit H.;
Hjelme, Dag Roar;
Stokke, Bjørn Torger.
(2009)
Determination of Glucose Levels Using a Functionalized Hydrogel-Optical Fiber Biosensor: Toward Continuous Monitoring of Blood Glucose in Vivo.
Analytical Chemistry
Vitenskapelig artikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2009)
Effect of traffic patterns on automatic polarization control with polarization and time-division multiplexed optical packet transmission.
Journal of Optical Networking
Vitenskapelig artikkel
-
Tierney, Sven;
Hjelme, DR;
Stokke, Bjørn Torger.
(2008)
Determination of swelling of responsive gels with nanometer resolution. Fiber-optic based platform for hydrogels as signal transducers.
Analytical Chemistry
Vitenskapelig artikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2007)
Automatic polarization control for packet transmission in a hybrid circuit and packet switched optical network.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
-
Larsen, Eivind La Puebla;
Randeberg, Lise Lyngsnes;
Gederaas, Odrun Arna;
Arum, Carl-Jørgen;
Krokan, Hans Einar;
Chen, Duan.
(2006)
Monitoring of hALA induced PDT in rat bladder cancer by optical spectroscopy.
Lasers in Surgery and Medicine
Sammendrag/abstract
-
Bjørnstad, Steinar;
Hjelme, Dag Roar;
Stol, Norvald.
(2006)
A Packet-Switched Hybrid Optical Network with Service Guarantees.
IEEE Journal on Selected Areas in Communications
Vitenskapelig artikkel
-
Nord, Martin;
Bjornstad, Steinar;
Bjørnstad, Steinar;
Austad, Oddgeir;
Tuft, Vegard Larsen;
Hjelme, Dag Roar.
(2006)
OpMiGua Hybrid Circuit- and Packet-Switched Test-Bed Demonstration and Performance.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
-
Nord, Martin;
Bjørnstad, Steinar;
Austad, Oddgeir;
Tuft, Vegard;
Hjelme, Dag roar;
Sudbø, Aasmund Sveinung.
(2006)
Hybrid circuit- and packet switched test-bed.
IEEE Photonics Technology Letters
Vitenskapelig artikkel
-
Makarov, Vadim;
Hjelme, Dag Roar.
(2005)
Faked states attack on quantum cryptosystems.
Journal of Modern Optics
Vitenskapelig artikkel
-
Bjørnstad, Steinar;
Nord, Martin;
Olsen, Torodd;
Hjelme, Dag Roar;
Stol, Norvald.
(2005)
Burst, packet and hybrid switching in the optical core network.
Telektronikk
Vitenskapelig artikkel
-
Makarov, Vadim;
Brylevski, Alexey;
Hjelme, Dag Roar.
(2004)
Real-time phase tracking in single-photon interferometers.
Applied Optics
Vitenskapelig artikkel
-
Vakhitov, Artem;
Makarov, Vadim;
Hjelme, Dag Roar.
(2001)
Large pulse attack as a method of conventional optical eavesdropping in quantum cryptography.
Journal of Modern Optics
Vitenskapelig artikkel
-
Hjelme, Dag Roar;
Storøy, Helge;
Skaar, Johannes.
(1998)
Reconfigurable all-optical crossconnect node using synthesized fiber Bragg gratings for both demultiplexing and switching.
OSA Trends in Optics and Photonics
Vitenskapelig artikkel
Del av bok/rapport
-
Muri, Harald Ian;
Wahl, Markus Solberg;
Lamb, Jacob Joseph;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Sensor fusion.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Muri, Harald Ian;
Snilsberg, Rolf Kristian;
Lamb, Jacob Joseph;
Hjelme, Dag Roar.
(2020)
Temperature and humidity measurements.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Lamb, Jacob Joseph;
Burheim, Odne Stokke;
Hjelme, Dag Roar.
(2020)
Introduction.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Muri, Harald Ian;
Lamb, Jacob Joseph;
Wahl, Markus Solberg;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Hydrogen gas measurements.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Lamb, Jacob Joseph;
Muri, Harald Ian;
Snilsberg, Rolf Kristian;
Hjelme, Dag Roar.
(2020)
Light properties and sensors.
Springer
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Wahl, Markus Solberg;
Wilhelmsen, Øivind;
Hjelme, Dag Roar.
(2018)
Combined temperature and RI sensor for exploring the phase transitions of ethanol solutions.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Milenko, Karolina Barbara;
Larsen Jernelv, Ine;
Fuglerud, Silje Skeide;
Aksnes, Astrid;
Ellingsen, Reinold;
Hjelme, Dag Roar.
(2018)
Towards Fiber-Optic Raman Spectroscopy for Glucose Sensing.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen Jernelv, Ine;
Milenko, Karolina Barbara;
Ellingsen, Reinold;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2018)
Improving Multivariate Analysis in Mid-Infrared Spectroscopy for Biosensing.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Fuglerud, Silje Skeide;
Milenko, Karolina Barbara;
Larsen Jernelv, Ine;
Ellingsen, Reinold;
Aksnes, Astrid;
Hjelme, Dag Roar.
(2018)
A miniaturized ball-lensed fiber optic NIR transmission spectroscopy-based glucose sensor.
Optics Info Base, Optical Society of America
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Hjelme, Dag Roar;
Lydersen, Lars Vincent Van de Wiel;
Makarov, Vadim.
(2011)
Quantum Cryptography.
CRC Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bjørnstad, Steinar;
Nord, Martin;
Eriksen, Lars Erik;
Tuft, Vegard Larsen;
Hjelme, Dag Roar;
Stol, Norvald.
(2007)
Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Larsen, Eivind La Puebla;
Randeberg, Lise Lyngsnes;
Gederaas, Odrun Arna;
Krokan, Hans Einar;
Hjelme, Dag Roar;
Svaasand, Lars O..
(2007)
In vitro study on methemoglobin formation in erythrocytes following hexyl-aminolevulinate induced photodynamic therapy.
SPIE - The International Society for Optics and Photonics
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tuft, Vegard Larsen;
Buron, Jakob;
Hjelme, Dag Roar;
Bjørnstad, Steinar.
(2006)
Demonstration of an All-Optical Class-of-Service Segregation Method for Edge Nodes in Hybrid Circuit/Packet Switched Networks.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bjørnstad, Steinar;
Nord, Martin;
Tuft, Vegard Larsen;
Austad, Oddgeir;
Hjelme, Dag Roar;
Eriksen, Lars Erik.
(2006)
Experimental Demonstration of OpMiGua Hybrid Circuit/Packet Nodes.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tuft, Vegard Larsen;
Hjelme, Dag Roar.
(2006)
The Effect of PDL in a Polarization and Time Division Multiplexed Scheme for All-Optical Class of Service Segregation.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Bjørnstad, Steinar;
Eriksen, Lars Erik;
Hjelme, Dag Roar.
(2006)
The OpMiGua multiservice optical hybrid packet/circuit switched network supporting TV-broadcasting QoS requirements.
IEEE Press
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
-
Tuft, Vegard Larsen;
Bjørnstad, Steinar;
Hjelme, Dag Roar.
(2005)
Time Interleaved Polarization Multiplexing for Polarization Labelling.
Annet
-
Bjørnstad, Steinar;
Øverby, Harald;
Stol, Norvald;
Hjelme, Dag Roar.
(2005)
Protecting guaranteed service traffic in an OpMiGua hybrid network.
Institution of Electrical Engineers (IEE)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Rapport
-
Schwermer, Silje Fuglerud;
Hjelme, Dag Roar;
Aksnes, Astrid;
Milenko, Karolina Barbara.
(2022)
Near Infrared Spectroscopy for Continuous Glucose Monitoring.
Doctoral theses at NTNU (184)
Doktorgradsavhandling
-
Jernelv, Ine Larsen;
Hjelme, Dag Roar;
Aksnes, Astrid.
(2020)
Mid-Infrared Tuneable Laser Spectroscopy for Glucose Sensing.
Doktoravhandlinger ved NTNU (ISSN 1503-8181)
Doktorgradsavhandling
-
saldana, diego sanchez;
Hjelme, Dag Roar.
(2018)
online sensor concept for municipal solid waste characterization review.
NTNU and ENERSENSE
Rapport
-
Nord, Martin;
Bjørnstad, Steinar;
Tuft, Vegard;
Kimsås, Andreas;
Hjelme, Dag Roar;
Eriksen, Lars Erik.
(2006)
The OpMiGua project - final report.
Telenor FoU report (Rxx)
Rapport
Undervisning
Emner
- FE8123 - Doktorgradsseminar i nanoelektronikk og fotonikk
- TFE4202 - Sensorsystemer - design 1
- IELS2031 - Elektronikkonstruksjon
- IELET3109 - Avanserte Sensorsystemer
- TFE4166 - Fotonikk II
- TFE4204 - Sensorsystemer - design 2
- TFE4930 - Electronic Systems Design, masteroppgave
- TFE4161 - Fotonikk I
- TFE4590 - Electronic Systems Design, fordypningsprosjekt
- IELET2112 - Anvendt instrumentering
- IELS3011 - Avanserte sensorsystemer
- FE8140 - Optiske, elektriske og magnetiske karakteriseringsteknikker
Formidling
2025
-
Vitenskapelig foredragFried, Michael Aron; Hjelme, Dag Roar. (2025) Novel tunable diode laser spectroscopy with square wave injection current modulation and simple calibration. SPIE SPIE Photonic West , San Francisco 2025-01-17 - 2025-04-22
2024
-
Vitenskapelig foredragYadav, Mukesh; Hjelme, Dag Roar; Aksnes, Astrid. (2024) Optical On-chip Xenobiotic Sensor. Norwegian Physical Society Norwegian Electro-optics Meeting 2024 , Oscarsborg Fortress Hotel and Resort, Oslo 2024-05-21 - 2024-05-24
-
IntervjuNormannsen, Sølvi Waterloo; Carlsen, Sven Magnus; Berg, Hilde Kjeldstad; Stavdahl, Øyvind; Ellingsen, Reinold; Hjelme, Dag Roar. (2024) A new insulin mixture could make life easier for patients with type 1 diabetes. Norwegian SciTech News Norwegian SciTech News [Fagblad] 2024-01-04
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IntervjuNormannsen, Sølvi Waterloo; Carlsen, Sven Magnus; Berg, Hilde Kjeldstad; Stavdahl, Øyvind; Ellingsen, Reinold; Hjelme, Dag Roar. (2024) Ny insulin-miks kan gi pasienter med diabetes type 1 et lettere liv. Gemini Gemini [Fagblad] 2024-01-04
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Vitenskapelig foredragVaskinn, Kristina Skarvang; Elson, Daniel J.; Beppu, Shohei; Soma, Daiki; Bjørnstad, Steinar; Hjelme, Dag Roar. (2024) Earthquake Detection using State-of-Polarisation Sensing on Aerial Cable. 50th European Conference on Optical Communication (ECOC 2024) , Frankfurt 2024-09-22 - 2024-09-26
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IntervjuNormannsen, Sølvi Waterloo; Carlsen, Sven Magnus; Berg, Hilde Kjeldstad; Stavdahl, Øyvind; Ellingsen, Reinold; Hjelme, Dag Roar. (2024) Ny insulin-miks kan gi pasienter med diabetes type 1 et lettere liv. Forskning.no Forskning.no [Internett] 2024-01-14
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IntervjuCarlsen, Sven Magnus; Berg, Hilde Kjeldstad; Stavdahl, Øyvind; Ellingsen, Reinold; Hjelme, Dag Roar; Christiansen, Sverre Christian. (2024) Norsk forskning: Ny medisin kan forenkle livet til type 1-diabetikere. VG Pluss VG Pluss [Internett] 2024-02-08
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IntervjuCarlsen, Sven Magnus; Berg, Hilde Kjeldstad; Stavdahl, Øyvind; Ellingsen, Reinold; Hjelme, Dag Roar; Christiansen, Sverre Christian. (2024) New formulation of insulin may speed up its action for people with type 1 diabetes. Breakthrough T1D Research News Breakthrough T1D Research News [Internett] 2024-03-25
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Vitenskapelig foredragVaskinn, Kristina Skarvang; Bjørnstad, Steinar; Sæthre, Erik; Hjelme, Dag Roar. (2024) Local Wind Impact Sensing using State of Polarization Measurement on a Live Short-Haul Aerial Fibre Cable. 2024 Optical Fiber Communications Conference and Exhibition (OFC) , San Diego, CA 2024-03-24 - 2024-03-28
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Vitenskapelig foredragBjørnstad, Steinar; Vaskinn, Kristina Skarvang; Hjelme, Dag Roar; Tunheim, Asbjørn; Fjermestad, Frode; Østerli, Eivind. (2024) First Impact Movement Characterization of Shallow Buried Live Subsea-Cable. 2024 Optical Fiber Communications Conference and Exhibition (OFC) , San Diego, CA 2024-03-24 - 2024-03-28
2023
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Faglig foredragSkarvang, Kristina Shizuka Yamase; Bjørnstad, Steinar; Rørstadbotnen, Robin Andre; Bozorgebrahimi, Kurosh; Hjelme, Dag Roar. (2023) Observation of Local Small Magnitude Earthquakes using State Of Polarization Monitoring in a 250km Passive Arctic Submarine Communication Cable. IEEE 2023 Optical Fiber Communications Conference and Exhibition (OFC) , San Diego, CA 2023-03-05 - 2023-03-09
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Faglig foredragSkarvang, Kristina Shizuka Yamase; Bjørnstad, Steinar; Rørstadbotnen, Robin Andre; Bozorgebrahimi, Kurosh; Brenne, Jan Kristoffer; Hjelme, Dag Roar. (2023) Comparing Sensitivity of State Of Polarization Monitoring and Distributed Acoustic Sensing in the Svalbard Arctic Submarine Communication Cable. SubOptic 2023 , Bangkok 2023-03-13 - 2023-03-16
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Faglig foredragSkarvang, Kristina Shizuka Yamase; Bjørnstad, Steinar; Hjelme, Dag Roar. (2023) A Practical Approach to Vibration Monitoring on a Metro Length Fiber Cable Using Low-Cost State of Polarization Monitoring. 2023 IEEE Photonics Society Summer Tropicals Meeting Series (SUM) , Sicily 2023-07-17 - 2023-07-19
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Vitenskapelig foredragUrban, David; Hjelme, Dag Roar; Descrovi, Emiliano. (2023) Polarization-driven reversible deformation in an azopolymer-elastomer composite. 4th International Conference on Photoalignment and Photopatterning in Soft Materials , St. Petersburg, Florida 2023-12-10 - 2023-12-16
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Vitenskapelig foredragUrban, David; Hjelme, Dag Roar; Descrovi, Emiliano. (2023) Polarization-driven reversible deformation in a light-responsive amorphous polymer blend. European Physical Society (EPS), Optica and IEEE Photonics Society CLEO Europe/Europe-EQEC , München 2023-06-26 - 2023-06-30
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Vitenskapelig foredragUrban, David; Hjelme, Dag Roar; Descrovi, Emiliano. (2023) Light-responsive azopolymer-based metamaterials as locally, anisotropically, and reversibly stretchable polymer substrates. EMRS, SYMPOSIUM H Advanced strategies for smart functional and multifunctional biomaterials and biointerfaces European Materials Research Society (EMRS) Spring Meeting 2023 , Strasbourg 2023-05-29 - 2023-06-02
2022
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Vitenskapelig foredragUrban, David; Hjelme, Dag Roar; Descrovi, Emiliano. (2022) Polarized light guiding anisotropic deformation and relaxation in photosensitive polymeric substrates. EOS European Optical Society EOS Annual Meeting 2022 , Porto 2022-09-12 - 2022-09-16
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Vitenskapelig foredragWahl, Markus Solberg; Boucher, Susanne Aspen; Lamb, Jacob Joseph; Sundby, Eirik; Thomas, Peter James; Hjelme, Dag Roar. (2022) Towards in-situ state of health monitoring of lithium-ion batteries using internal fiber-optic sensors. The Electrochemical Society 241st ECS Meeting , Vancouver, Canada 2022-05-29 - 2022-06-02
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Vitenskapelig foredragGrayson, Michael; Krueper, Greg; Xu, Bo; Hjelme, Dag Roar; Gopinath, Juliet; Park, Wounjhang. (2022) GeSbSe Devices for Mid-Infrared Optical Sensing. Optica Optical Sensors 2022 , Vancouver, British Columbia 2022-07-11 - 2022-07-15
2021
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PosterFuglerud, Silje Skeide; Ellingsen, Reinold; Aksnes, Astrid; Hjelme, Dag Roar. (2021) Interfering substances for glucose sensing by near-infrared spectroscopy. Kernes ATTD , Digital 2021-06-02 - 2021-06-05
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Vitenskapelig foredragFuglerud, Silje Skeide; Hjelme, Dag Roar. (2021) Towards Remote Fiber-Based In Vivo Sensing of Glucose by Near Infrared Spectroscopy. Optical Society America OSA Optical Sensors and Sensing Congress , Online 2021-07-19 - 2021-07-21
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Vitenskapelig foredragFuglerud, Silje Skeide; Hjelme, Dag Roar. (2021) Reducing the SNR for Fiber-Coupled Supercontinuum Absorption Spectroscopy Applied to Glucose Sensing. Laser Components LC week: IR News Flash , Online 2021-12-06 - 2021-12-09
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Vitenskapelig foredragFuglerud, Silje Skeide; Hjelme, Dag Roar. (2021) Fiber-based glucose sensing for an artificial pancreas. Laser Components LC talks 2nd infrared sessions 2021-01-19 -
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PosterMuri, Harald Ian; Hjelme, Dag Roar. (2021) Classification of municipal solid waste using deep convolutional neural network model applied to multispectral images. SPIE SPIE Optical Metrology , Munchen 2021-06-21 - 2021-06-25
2020
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Vitenskapelig foredragYadav, Mukesh; Noh, Jong Wook; Hjelme, Dag Roar; Aksnes, Astrid. (2020) Hybrid ring resonator sensor with high quality factor and wide dynamic range. OSA The optical Society OSA Optical Sensors and Sensing Congress , Digital 2020-06-22 - 2020-06-26
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Vitenskapelig foredragJernelv, Ine Larsen; Strøm, Karina; Hjelme, Dag Roar; Aksnes, Astrid. (2020) Mid-infrared spectroscopy with a fiber-coupled tuneable quantum cascade laser for glucose sensing. SPIE Photonics West , San Francisco 2020-02-01 - 2020-02-06
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Vitenskapelig foredragJernelv, Ine Larsen; Høvik, Jens; Hjelme, Dag Roar; Aksnes, Astrid. (2020) Signal enhancement in microstructured silicon attenuated total reflection elements with quantum cascade laser-based spectroscopy. SPIE Photonics Europe 2020-04-06 - 2020-04-10
2019
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PosterFougner, Anders Lyngvi; Åm, Marte Kierulf; Bösch, Patrick Christian; Christiansen, Sverre; Ellingsen, Reinold; Hjelme, Dag Roar. (2019) Why intraperitoneal glucose sensing is sometimes surprisingly rapid and sometimes slow: A hypothesis. Kenes International Organizers of Congresses S.A. Advanced Technologies & Treatments for Diabetes (ATTD) , Berlin 2019-02-20 - 2019-02-23
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Vitenskapelig foredragFuglerud, Silje Skeide; Milenko, Karolina Barbara; Ellingsen, Reinold; Aksnes, Astrid; Martens, Harald Aagaard; Hjelme, Dag Roar. (2019) Aqueous glucose sensing by fiber-based near-infrared spectroscopy. Nofima Scandinavian symposium on Chemometrics 16 , Oslo 2019-06-17 - 2019-06-20
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Vitenskapelig foredragFuglerud, Silje Skeide; Milenko, Karolina Barbara; Ellingsen, Reinold; Aksnes, Astrid; Hjelme, Dag Roar. (2019) Feasibility of supercontinuum sources for use in glucose sensing by absorption spectroscopy. SPIE/OSA European Conferences on Biomedical Optics , Munchen 2019-06-23 - 2019-06-27
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Faglig foredragOsinski, Dominik; Bizon, Patrycja; Midtfjord, Helene B.; Wierzchon, Michal; Hjelme, Dag Roar. (2019) Designing Auditory Color Space for Color Sonification Systems. Northumbria University The 25th International Conference on Auditory Display (ICAD 2019) , Newcastle 2019-06-23 - 2019-06-27
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Vitenskapelig foredragJernelv, Ine Larsen; Hjelme, Dag Roar; Ellingsen, Reinold; Aksnes, Astrid. (2019) Quantum Cascade Lasers in Biomedicine and Nanotechnology. Nano-Network Nano-Network Workshop , Tromsø 2019-06-17 - 2019-06-19
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PosterYadav, Mukesh; Høvik, Jens; Noh, Jong Wook; Hjelme, Dag Roar; Aksnes, Astrid. (2019) Silicon photonic waveguide sensor. NTNU Nano, the NanoNetwork, the Research Council of Norway Norwegian Nano Symposium 2019 , Trondheim 2019-10-16 - 2019-10-17
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PosterAksnes, Astrid; Høvik, Jens; Yadav, Mukesh; Noh, Jong Wook; Arnfinnsdottir, Nina Bjørk; Øvreeide, Ingrid Haga. (2019) Lab-on-a-chip platform for early detection of disease biomarkers. Digital Life Norway Centre Digital Life 2019 , Clarion Hotel Edge, Tromsø 2019-09-05 - 2019-09-06
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Vitenskapelig foredragAksnes, Astrid; Høvik, Jens; Yadav, Mukesh; Noh, Jong Wook; Hjelme, Dag Roar; Milenko, Karolina Barbara. (2019) Photonics activities at IES: LOC biosensor project and Artificial intraperitoneal pancreas project. UiT Seminar at UiT , Tromsø 2019-09-05 - 2019-09-05
2018
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PosterBösch, Patrick Christian; Fougner, Anders Lyngvi; Ellingsen, Reinold; Hjelme, Dag Roar; Stavdahl, Øyvind. (2018) Test-rig for Automated Testing of Continuous Glucose Sensor Prototypes. Kenes International Organizers of Congresses S.A. Advanced Technologies & Treatments for Diabetes (ATTD) , Vienna 2018-02-14 - 2018-02-17
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Vitenskapelig foredragHjelme, Dag Roar. (2018) SP2 - Sensor development. SINTEF Energi & EGE Oslo KPN WtE 2030 seminar, workshop & SC , Renovasjonsetaten, Oslo 2018-10-30 - 2018-10-31
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Vitenskapelig foredragHammarling, Krister; Muri, Harald Ian; Wahl, Markus Solberg; Engholm, Magnus; Hjelme, Dag Roar. (2018) A combined glucose and pH sensor on a single optical fiber for continuous point-of-care testing. Proceedings of SPIE, the International Society for Optical Engineering 2018 ;Volum 10488 2018-01-27 - 2018-02-01
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Vitenskapelig foredragJernelv, Ine Larsen; Milenko, Karolina Barbara; Ellingsen, Reinold; Hjelme, Dag Roar; Aksnes, Astrid. (2018) Developing a Mid-Infrared Spectroscopy System for Biomedical Sensing. Norwegian Electro-Optics Meeting , Henningsvær 2018-05-02 - 2018-05-04
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PosterWahl, Markus Solberg; Wilhelmsen, Øivind; Hjelme, Dag Roar. (2018) Combined temperature and RI sensor for exploring the phase transitions of ethanol solutions. EPFL OFS26 , Lausanne 2018-09-24 - 2018-09-28
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Vitenskapelig foredragWahl, Markus Solberg; Wilhelmsen, Øivind; Hjelme, Dag Roar. (2018) A Combined Temperature Sensor and Phase Transition Detection Probe on a Single Optical Fiber. 20th Symposium on Thermophysical Properties , Boulder 2018-06-24 - 2018-06-29
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PosterYadav, Mukesh; Høvik, Jens; Hjelme, Dag Roar; Aksnes, Astrid. (2018) Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings. SPIE, The International Society for Optics and Photonics SPIE International Symposium on Optics + Photonics 2018 , San Diego, California, USA 2018-08-19 - 2018-08-23
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Vitenskapelig foredragOsinski, Dominik; Hjelme, Dag Roar. (2018) A sensory substitution device inspired by the human visual system. 11th International Conference on Human System Interaction HSI 2018 2018-07-04 - 2018-07-06
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PosterMilenko, Karolina Barbara; Jernelv, Ine Larsen; Fuglerud, Silje Skeide; Aksnes, Astrid; Ellingsen, Reinold; Hjelme, Dag Roar. (2018) Glucose monitoring with optical fiber based Raman spectroscopy. Norwegian Electro-Optics Meeting 2018-05-02 - 2018-05-04
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PosterLarsen Jernelv, Ine; Milenko, Karolina Barbara; Ellingsen, Reinold; Hjelme, Dag Roar; Aksnes, Astrid. (2018) Improving Multivariate Analysis in Mid-Infrared Spectroscopy for Biosensing. Optical Society of America Advanced Photonics Congress , Zürich 2018-07-02 - 2018-07-05
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Faglig foredragBurheim, Odne Stokke; Lien, Kristian Myklebust; Hjelme, Dag Roar. (2018) ENERSENSE - Energy Nexus of Efficiency, Storage, and Sensor. NTNU, Bruno Pollet, og Int. Soc. Hydrogen Energy H2FC2018 , Trondheim 2018-05-14 - 2018-05-15
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Vitenskapelig foredragFuglerud, Silje Skeide; Milenko, Karolina Barbara; Larsen Jernelv, Ine; Ellingsen, Reinold; Aksnes, Astrid; Hjelme, Dag Roar. (2018) A miniaturized ball-lensed fiber optic NIR transmission spectroscopy-based glucose sensor. The Optical Society OSA Advanced Photonics Congress , Zürich 2018-07-02 - 2018-07-05
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PosterMilenko, Karolina Barbara; Larsen Jernelv, Ine; Fuglerud, Silje Skeide; Aksnes, Astrid; Ellingsen, Reinold; Hjelme, Dag Roar. (2018) Towards Fiber-Optic Raman Spectroscopy for Glucose Sensing. OSA OSA Advanced Photonics Congress , Zurich 2018-07-02 - 2018-07-05
2017
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PosterSarker, Shiplu; Lamb, Jacob Joseph; Lien, Kristian Myklebust; Hjelme, Dag Roar. (2017) Anaerobic digestion system for bio-CH4 and bio-H2 production utilizing fish waste in Norway: A comparison between a single stage and two stage reactor process. ETA Florence, Renewable Energies European biomass conference and exhibition 2017 , Stockholm 2017-06-12 - 2017-06-15
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PosterHjelme, Dag Roar; Muri, Harald Ian DI. (2017) First step towards an interferometric and localized surface plasmon fiber optic sensor. IEEE, SPIE, OSA Optical Fiber Sensors Conference (OFS), 2017 25th 2017-04-24 - 2017-04-28
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PosterHammarling, Krister; Muri, Harald Ian DI; Wahl, Markus Solberg; Engholm, Magnus; Hjelme, Dag Roar. (2017) Dual Parameter Fiber Optic Sensor Combining a Fabry-Perot and a Mach-Zehnder Interferometer. IEEE IEEE Sensors 2017 , Glasgow 2017-10-29 - 2017-11-01
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Vitenskapelig foredragHjelme, Dag Roar. (2017) A Lower Bound on the Resolution Limit of Resonant Refractive Index Sensors. Optical Society of America Advanced Photonics 2017 , New Orleans 2017-07-24 - 2017-07-27
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PosterMilenko, Karolina Barbara; Jernelv, Ine Larsen; Aksnes, Astrid; Ellingsen, Reinold; Carlsen, Sven Magnus; Hjelme, Dag Roar. (2017) Raman spectroscopy for continuous glucose monitoring. Centre for Digital Life Norway Digital Life 2017 , Oslo 2017-03-20 -
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Faglig foredragMilenko, Karolina Barbara; Jernelv, Ine Larsen; Aksnes, Astrid; Ellingsen, Reinold; Carlsen, Sven Magnus; Hjelme, Dag Roar. (2017) Optical Fiber Probe based on Raman Spectroscopy for Continuous Glucose Monitoring. 9th International Conference on Advanced Vibrational Spectroscopy , Victoria BC 2017-06-11 - 2017-06-16
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PosterLarsen Jernelv, Ine; Milenko, Karolina Barbara; Carlsen, Sven Magnus; Ellingsen, Reinold; Hjelme, Dag Roar; Aksnes, Astrid. (2017) Quantitative Measurements of Glucose Solutions Using Mid-Infrared Spectroscopy. Digital Life Digital Life 2017 , Oslo 2017-03-20 - 2017-03-21
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PosterLarsen Jernelv, Ine; Milenko, Karolina Barbara; Hjelme, Dag Roar; Ellingsen, Reinold; Carlsen, Sven Magnus; Aksnes, Astrid. (2017) Optimising Multivariate Models for Glucose Measurements in an ATR-FTIR Spectrometer. ICAVS9 , Victoria 2017-06-11 - 2017-06-16
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PosterLamb, Jacob Joseph; Sarker, Shiplu; Lien, Kristian Myklebust; Hjelme, Dag Roar. (2017) On-line monitoring of volatile fatty acids and hydrogen during anaerobic digestion. 3rd Conference on Monitoring & Process Control of Anaerobic Digestion Plants 2017-03-29 - 2017-03-30
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PosterÅm, Marte Kierulf; Fougner, Anders Lyngvi; Bösch, Patrick Christian; Dirnena-Fusini, Ilze; Kölle, Konstanze; Stavdahl, Øyvind. (2017) Intraperitoneal glucose measuring using amperometric glucose sensors and intraperitoneal fluid samples in an animal model. Kenes International Organizers of Congresses S.A. Advanced Technologies & Treatments for Diabetes (ATTD) , Paris 2017-02-15 - 2017-02-18
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PosterBösch, Patrick Christian; Åm, Marte Kierulf; Stavdahl, Øyvind; Fougner, Anders Lyngvi; Carlsen, Sven Magnus; Ellingsen, Reinold. (2017) Set-up and procedure for intraperitoneal glucose monitoring in anaesthetised animals. Kenes International Organizers of Congresses S.A. Advanced Technologies & Treatments for Diabetes (ATTD) , Paris 2017-02-15 - 2017-02-18
2016
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Vitenskapelig foredragMuri, Harald Ian; Hjelme, Dag Roar. (2016) Reflection based nanoplasmonic fiber optic sensor. Norwegian electro-optics meeting 2016 2016-04-13 - 2016-04-15
2015
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Programdeltagelse
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Faglig foredragHjelme, Dag Roar. (2015) Komponenter for optiske nettverk. NITO Fiberoptikk 2015 , Trondheim 2015-11-02 - 2015-11-03
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Vitenskapelig foredragHjelme, Dag Roar. (2015) Lab-on-a-chip biophotonic sensor platform for diagnostics. NTNU NTNU Bioinformatics Network Seminar 2015 , Trondheim 2015-12-14 - 2015-12-14
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Vitenskapelig foredragHjelme, Dag Roar; Strømstad, Håkon. (2015) Low-cost high performance readout system for fiber-optic biosensors. SPIE Photonic West BIOS , San Francisco 2015-02-07 - 2015-02-12
2014
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Vitenskapelig foredragHjelme, Dag Roar; Aune, Oddvar; Falch, Berit H.; Østling, Dan; Ellingsen, Reinold. (2014) Fiber-Optic Biosensor Technology for Rapid, Accurate and Specific Detection of Enzymes. Optical Society of America Advanced Photonics , Barcelona 2014-07-27 - 2014-07-31
2011
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PosterKimsas, Andreas; Bjørnstad, Steinar; Stol, Norvald; Hjelme, Dag Roar. (2011) AWGshare - a Highly Scalable and Strictly Non-Blocking Optical Switch. Universitetet i Bologna 15th International Conference on Optical Network Design and Modeling (ONDM 2011) , Bologna 2011-02-07 - 2011-02-10
2010
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Vitenskapelig foredragHjelme, Dag Roar. (2010) An Optical Biosensor Technology For Clinical Diagnostics And Monitoring. Norsk Fysisk Selskap Norwegian Electro-Optics Meeting , Ålesund 2010-04-07 - 2010-04-09
2009
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Vitenskapelig foredragTierney, Sven; Hjelme, DR; Stokke, Bjørn Torger. (2009) Application of a high resolution interferometric fiber-optic technology platform for development of (bio)polymer hydrogels as signal transducers in biosensing. Norwegian Research Council 3rd NANOMAT Conference , Lillehammer 2009-06-14 - 2009-06-16
2008
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Vitenskapelig foredragTierney, Sven; Hjelme, DR; Stokke, Bjørn Torger. (2008) Glucose responsive hydrogels measured by a novel optical technique. Polymer Networks Group Polymer Networks 2008, 19th Polymer Networks Group Conference , Larnaca 2008-06-22 - 2008-06-26
2007
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Vitenskapelig foredragBjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard Larsen; Hjelme, Dag Roar; Stol, Norvald. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. DBB 33rd European Conference and Exhibition on Optical Communication Conference , Berlin 2007-09-17 - 2007-09-19
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Vitenskapelig foredragBjørnstad, Steinar; Nord, Martin; Eriksen, Lars Erik; Tuft, Vegard; Hjelme, Dag Roar; Stol, Norvald. (2007) Demonstration and analysis of TV- and data transport in the OpMiGua hybrid circuit/packet switched network testbed. Verein der Deutschen Ingenieuren ,” European Conference on Optical Communication (ECOC 2007), Session 4.6, September 16 - 20, 2007, , Berlin, Germany 2007-09-18 - 2007-09-20
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Vitenskapelig foredragTierney, Sven; Stokke, Bjørn Torger; Hjelme, Dag Roar. (2007) Polymer Gel Transducers as an Interface for Optical Detection of Biological Molecules. Materials Research Society MRS fall meeting 2007, symposium LL: Bioinspired Polymer Gels and Networks , Boston 2007-11-26 - 2007-11-29
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PosterLarsen, Eivind La Puebla; Randeberg, Lise Lyngsnes; Gederaas, Odrun Arna; Krokan, Hans Einar; Hjelme, Dag Roar; Svaasand, Lars O.. (2007) In vitro study on methemoglobin formation in erythrocytes following hexyl-aminolevulinate induced photodynamic therapy. SPIE SPIE Photonics West 2007: Biomedical Optics (BiOS) , San Jose 2007-01-20 - 2007-01-25
2006
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Vitenskapelig foredragTuft, Vegard Larsen; Hjelme, Dag Roar. (2006) The Effect of PDL in a Polarization and Time Division Multiplexed Scheme for All-Optical Class of Service Segregation. IEEE 8th International Conference on Transparent Optical Networks (ICTON 2006) , Nottingham 2006-06-19 - 2006-06-22
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Vitenskapelig foredragLarsen, Eivind La Puebla; Randeberg, Lise Lyngsnes; Gederaas, Odrun Arna; Arum, Carl-Jørgen; Krokan, Hans Einar; Hjelme, Dag Roar. (2006) Monitoring of hALA induced PDT in rat bladder cancer by optical spectroscopy. American Society for Laser Medicine and Surgery Twenty-Sixth Annual Meeting , Boston, Massachusetts 2006-04-05 - 2006-04-09
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Vitenskapelig foredragBjørnstad, Steinar; Eriksen, Lars Erik; Hjelme, Dag Roar. (2006) The OpMiGua multiservice optical hybrid packet/circuit switched network supporting TV-broadcasting QoS requirements. ICTON 2006 , Nottingham 2006-06-18 - 2006-06-22
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PosterTuft, Vegard Larsen; Bjørnstad, Steinar; Sudbø, Aasmund; Hjelme, Dag Roar. (2006) Using the State of Polarization in a Hybrid Optical Network. Norwegian Physical Society Northern Optics 2006 , Bergen 2006-06-14 - 2006-06-16
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PosterTuft, Vegard Larsen; Buron, Jakob; Hjelme, Dag Roar; Bjørnstad, Steinar. (2006) Demonstration of an All-Optical Class-of-Service Segregation Method for Edge Nodes in Hybrid Circuit/Packet Switched Networks. The SEE 32nd European Conference on Optical Communication (ECOC) 2006 , Cannes 2006-09-24 - 2006-09-28
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PosterBjørnstad, Steinar; Nord, Martin; Tuft, Vegard Larsen; Austad, Oddgeir; Hjelme, Dag Roar; Eriksen, Lars Erik. (2006) Experimental Demonstration of OpMiGua Hybrid Circuit/Packet Nodes. The SEE 32nd European Conference on Optical Communication (ECOC) 2006 , Cannes 2006-09-24 - 2006-09-28
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PosterTuft, Vegard; Bjørnstad, Steinar; Sudbø, Aasmund Sveinung; Hjelme, Dag Roar. (2006) Using the state of polarization in a hybrid optical network, paper W46 at the conference ‘,’ 14-16 June 2006,. Norsk Fysisk Selskap Northern Optics 2006 , Radisson SAS Hotel Norge, Bergen 2006-06-14 - 2006-06-16
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PosterLarsen, Eivind La Puebla; Randeberg, Lise Lyngsnes; Hjelme, Dag Roar; Svaasand, Lars O.. (2006) Fiber probe for in vivo Optical Spectroscopy during Photodynamic Therapy. Norwegian Physical Society (NFS) Northern Optics , Bergen 2006-06-14 - 2006-06-16
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PosterTierney, Sven; Stokke, Bjørn Torger; Hjelme, Dag Roar; Sundan, Anders. (2006) Polymer gel transducers as an interface for optical detection of biological macromolecules. Biofysikkseksjonen av Norsk fysisk selskap Biofysikermøtet 2006 , Kongsvold Fjeldstue 2006-03-15 - 2006-03-17
2005
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Vitenskapelig foredragTuft, Vegard Larsen; Bjørnstad, Steinar; Hjelme, Dag Roar. (2005) Time Interleaved Polarization Multiplexing for Polarization Labelling. Universitat Politècnica de Catalunya 7th International Conference on Transparent Optical Networks , Barcelona 2005-07-03 - 2005-07-07
2004
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Vitenskapelig foredragBjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2004) Asynchronous feedback buffer with reduced self induced contention for optical packet switches. Optoelectronics and communication conference/International conference on optical Internet , Yokohama 2004-07-12 - 2004-07-16
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Vitenskapelig foredragBjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald; Nord, Martin. (2004) A packet switched hybrid optical network with service guarantees. Norsk elektro-optikk møte , Tønsberg 2004-05-02 - 2004-05-04
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Vitenskapelig foredragVignes, Bendik; Chizhov, Mikhail; Makarov, Vadim; Dyrseth, Astrid Aksnes; Hjelme, Dag Roar. (2004) Faked sates attack on quantum cryptosystems. Norwegian Electro-Optical Society Norwegian Electro-Optics Meeting 2004 , Tønsberg 2004-05-02 - 2004-05-04
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PosterDyrseth, Astrid Aksnes; Engan, Helge Emil; Hjelme, Dag Roar. (2004) Optical detection of ultrasound and optical spectroscopy for detection of vulnerable plaques. Optics Group of Norwegian Physical Society Norwegian Electro-Optics meeting , Tønsberg 2004-05-02 - 2004-05-04
2003
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Vitenskapelig foredragBjørnstad, Steinar; Nord, Martin; Hjelme, Dag Roar. (2003) QoS differentiation and header/payload separation in optical packet switching using polarisation multiplexing. European Conference on Optical Communication , Rimini 2003-09-21 - 2003-09-25
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Vitenskapelig foredragBjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2003) A highly efficient optical packet switching node design supporting guaranteed service. European Conference on Optical Communication , Rimini 2003-09-21 - 2003-09-25
2002
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PosterMakarov, Vadim; Hjelme, Dag Roar. (2002) Practical quantum cryptography. Norwegian Electro-Optics Meeting 2002 , Flåm 2002-05-05 -
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Vitenskapelig foredragMakarov, Vadim; Hjelme, Dag Roar. (2002) Quantum cryptography. Norsk kryptoseminar 2002 , Trondheim 2002-10-18 -
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Vitenskapelig foredragBjørnstad, Steinar; Nord, Martin; Hjelme, Dag Roar. (2002) Transparent optical protection switching scheme based on detection of polarisation fluctuations. OFC2002 Optical Fiber Communication conference , Anaheim, California, USA 2002-03-21 -
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Vitenskapelig foredragBjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2002) A scalable optical packet switch for variable length packets employing share electronic buffering. ECOC2002 European Conference on Optical Communications , Copenhagen, Denmark 2002-09-11 -
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Vitenskapelig foredragBjørnstad, Steinar; Stol, Norvald; Hjelme, Dag Roar. (2002) Quality of service in optical packet switched DWDM transport networks. Asia Pacific Optical and Wireless Communications conference and exibition 2002 (APOC 2002, SPIE Conference) , Shanghai, China 2002-10-16 -
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Vitenskapelig foredragBjørnstad, Steinar; Hjelme, Dag Roar; Stol, Norvald. (2002) An optical packet switch design with shared electronic buffering and low bit rate add/drop inputs. ICTCON'2002 , Warsawa, Poland 2002-04-22 -
2001
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PosterMakarov, Vadim; Hjelme, Dag Roar. (2001) High-Speed Quantum Key Distribution Experiment. QUICK: Quantum interference and cryptographic keys: novel physics and advancing technologies , Cargese, Corsica, France 2001-04-13 -
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Vitenskapelig foredragBjørnstad, Steinar; Nord, Martin; Hanssen, Geir; Slagsvold, Bjørn; Hjelme, Dag Roar. (2001) Impact of Four-Wave-Mixing in polarization multiplexed 12.5 GHz channel spacing WDM systems. LEOS 2001 , San Diego, California, USA 2001-11-15 -
1998
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Vitenskapelig foredragHjelme, Dag Roar; Storøy, Helge; Skaar, Johannes. (1998) Reconfigurable all-fiber cross-connect node using synthesized fiber Bragg gratings for both demultiplexing and switching. Optical Fiber Communication Conference OFC'98 , San Jose, California