@inproceedings{DenglerVinogradovZiemannetal.2021, author = {Dengler, Simon Andreas and Vinogradov, Juri and Ziemann, Olaf and Engelbrecht, Rainer and Schmauß, Bernhard}, title = {Low Cost POF OTDR Reaches 200 m Sensing Distance}, volume = {2021}, publisher = {The International Committee on Polymer Optical Fibers, ICPOF}, address = {Jinhua City}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:92-opus4-26577}, pages = {13}, year = {2021}, language = {en} } @inproceedings{VinogradovMorfDengleretal.2021, author = {Vinogradov, Juri and Morf, Fabian and Dengler, Simon Andreas and Engelbrecht, Rainer and Ziemann, Olaf}, title = {FPGA and APD Based Optical Time Domane Reflectometry in Sensor Applications}, series = {The 28th International Conference on Plastic Optical Fibers 2019-11-20}, booktitle = {The 28th International Conference on Plastic Optical Fibers 2019-11-20}, year = {2021}, abstract = {This paper shows an optical time domain reflectometry (OTDR) system based on an avalanche photodiode (APD) receiver, a 520 nm laser diode transmitter, a high-speed analog-to-digital converter (ADC) and a commercially available field programmable gate array (FPGA). This approach allows OTDR measurements up to 200 m and provides a spatial resolution of 20 cm. Depending on the number of averaging, the measurement time can be between 5 s and 50 s for a range up to 200 m with a good signal to noise ratio.}, language = {en} } @inproceedings{DenglerRoseeuGonzalezLuberetal.2022, author = {Dengler, Simon Andreas and Roseeu Gonzalez, R. V. and Luber, M. and Ziemann, Olaf and Engelbrecht, Rainer and Schmauss, B.}, title = {Performance Evaluation of Reference Reflections in Polymer Optical Fibers for Strain Sensing}, series = {27th International Conference on Optical Fiber Sensors}, booktitle = {27th International Conference on Optical Fiber Sensors}, publisher = {Optica Publishing Group}, address = {Washington, D.C.}, isbn = {978-1-957171-14-2}, doi = {10.1364/ofs.2022.tu2.6}, year = {2022}, abstract = {We present a robust concept for quasi distributed strain measurement using optical time domain reflectometry (OTDR) in polymer optical fibers (POF). The spatial shifts of discrete reflective events in the OTDR trace are evaluated as reference points. It is shown how such reference reflections can be prepared and which properties can be expected.}, language = {en} } @inproceedings{DenglerLuberNeffetal.2023, author = {Dengler, Simon Andreas and Luber, Michael and Neff, L{\´e}on and Hangen, Hartmut and Schmauss, Bernhard and Ziemann, Olaf and Engelbrecht, Rainer}, title = {OTDR Strain and Force Sensing by POF on Geotextiles in a Geotechnical Application Test}, series = {28th International Conference on Optical Fiber Sensors}, booktitle = {28th International Conference on Optical Fiber Sensors}, publisher = {Optica Publishing Group}, address = {Washington, D.C.}, isbn = {978-1-957171-30-2}, doi = {10.1364/OFS.2023.W4.91}, year = {2023}, abstract = {With polymer optical fibers (POF) attached to geotextiles, optical time domain reflectometry (OTDR) can be used to measure strain of the geotextile spatially resolved in soil. We test the technique in a geotechnical application test and thus demonstrate the functionality of the sensor for field use.}, language = {en} } @techreport{DenglerFischerLuberetal.2020, author = {Dengler, Simon Andreas and Fischer, Jakob and Luber, Michael and Lenkowski, Holger and Sch{\"u}ßler, Christoph and Carruth, Kevin and Urbanek, Peter and Ziemann, Olaf}, title = {Power over POF - A Short Overview}, series = {P2 Sensors and Measurement Systems for Physical Quantities}, volume = {2020}, journal = {P2 Sensors and Measurement Systems for Physical Quantities}, publisher = {AMA Service GmbH}, address = {Wunstorf}, isbn = {978-3-9819376-2-6}, doi = {10.5162/SMSI2020/P2.15}, pages = {254 -- 255}, year = {2020}, abstract = {There are various applications in high voltage, explosive or high electromagnetic interfered environments that require sensors with an electrical isolation from other components of a system. The basics of possible solution, based on optically powered sensor links, were shown previously. Because of different requirements for the applications, a variety of system approaches has been developed (available power for sensor purposes; length between the control node and the sensor; speed of transmitted data etc.). Key requirements and the current approaches will be discussed below.}, language = {en} } @misc{DenglerKaefferleinEngelbrechtetal.2023, author = {Dengler, Simon Andreas and K{\"a}fferlein, Tilmann and Engelbrecht, Rainer and Schmauss, Bernhard and Ziemann, Olaf}, title = {Dependence of POF End Surface Reflectivity on Surface Roughness}, series = {Proceedings POF2023}, journal = {Proceedings POF2023}, year = {2023}, language = {en} } @incollection{DenglerLechnerLuberetal.2020, author = {Dengler, Simon Andreas and Lechner, Michael and Luber, Michael and Fischer, Jakob}, title = {Structural Health Monitoring mit OTDR}, editor = {Fahlbusch, Thomas}, publisher = {TEWISS Verlag}, isbn = {9783959004428}, pages = {147-155}, year = {2020}, language = {de} } @inproceedings{DenglerVinogradovEngelbrechtetal.2022, author = {Dengler, Simon Andreas and Vinogradov, Juri and Engelbrecht, Rainer and Schmauß, Bernhard}, title = {Recent Progress in POF OTDR Strain Sensing}, series = {International Conference on Plastic Optical Fibers}, volume = {Proceedings 2022}, booktitle = {International Conference on Plastic Optical Fibers}, year = {2022}, language = {en} } @misc{EngelbrechtDenglerLuberetal.2023, author = {Engelbrecht, Rainer and Dengler, Simon Andreas and Luber, Michael and Vinogradov, Juri and Ziemann, Olaf}, title = {Condition Monitoring with POF: Recent Progress on Geotextiles and Wind Turbines}, series = {Proceedings POF2023}, journal = {Proceedings POF2023}, year = {2023}, language = {en} }