TY - CHAP A1 - Dengler, Simon Andreas A1 - Vinogradov, Juri A1 - Ziemann, Olaf A1 - Engelbrecht, Rainer A1 - Schmauß, Bernhard T1 - Low Cost POF OTDR Reaches 200 m Sensing Distance KW - Optische Polymerfaser Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:92-opus4-26577 VL - 2021 SP - 13 PB - The International Committee on Polymer Optical Fibers, ICPOF CY - Jinhua City ER - TY - CHAP A1 - Vinogradov, Juri A1 - Morf, Fabian A1 - Dengler, Simon Andreas A1 - Engelbrecht, Rainer A1 - Ziemann, Olaf T1 - FPGA and APD Based Optical Time Domane Reflectometry in Sensor Applications T2 - The 28th International Conference on Plastic Optical Fibers 2019-11-20 N2 - 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. Y1 - 2022 ER - TY - CHAP A1 - Dengler, Simon Andreas A1 - Roseeu Gonzalez, R. V. A1 - Luber, M. A1 - Ziemann, Olaf A1 - Engelbrecht, Rainer A1 - Schmauss, B. T1 - Performance Evaluation of Reference Reflections in Polymer Optical Fibers for Strain Sensing T2 - 27th International Conference on Optical Fiber Sensors N2 - 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. Y1 - 2022 SN - 978-1-957171-14-2 U6 - https://doi.org/10.1364/ofs.2022.tu2.6 PB - Optica Publishing Group CY - Washington, D.C. ER - TY - CHAP A1 - Dengler, Simon Andreas A1 - Luber, Michael A1 - Neff, Léon A1 - Hangen, Hartmut A1 - Schmauss, Bernhard A1 - Ziemann, Olaf A1 - Engelbrecht, Rainer T1 - OTDR Strain and Force Sensing by POF on Geotextiles in a Geotechnical Application Test T2 - 28th International Conference on Optical Fiber Sensors N2 - 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. Y1 - 2023 SN - 978-1-957171-30-2 U6 - https://doi.org/10.1364/OFS.2023.W4.91 PB - Optica Publishing Group CY - Washington, D.C. ER - TY - RPRT A1 - Dengler, Simon Andreas A1 - Fischer, Jakob A1 - Luber, Michael A1 - Lenkowski, Holger A1 - Schüßler, Christoph A1 - Carruth, Kevin A1 - Urbanek, Peter A1 - Ziemann, Olaf T1 - Power over POF – A Short Overview T2 - P2 Sensors and Measurement Systems for Physical Quantities N2 - 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. KW - remotely powered sensors KW - galvanic isolation KW - sensor networks KW - polymer optical fiber KW - power over fiber Y1 - 2020 SN - 978-3-9819376-2-6 U6 - https://doi.org/10.5162/SMSI2020/P2.15 VL - 2020 SP - 254 EP - 255 PB - AMA Service GmbH CY - Wunstorf ER - TY - GEN A1 - Dengler, Simon Andreas A1 - Käfferlein, Tilmann A1 - Engelbrecht, Rainer A1 - Schmauss, Bernhard A1 - Ziemann, Olaf T1 - Dependence of POF End Surface Reflectivity on Surface Roughness T2 - Proceedings POF2023 KW - Fiber optics Y1 - 2023 ER - TY - CHAP A1 - Dengler, Simon Andreas A1 - Lechner, Michael A1 - Luber, Michael A1 - Fischer, Jakob ED - Fahlbusch, Thomas T1 - Structural Health Monitoring mit OTDR KW - Strucutral Health Monitorung KW - OTDR KW - POF Y1 - 2020 SN - 9783959004428 PB - TEWISS Verlag ER - TY - CHAP A1 - Dengler, Simon Andreas A1 - Vinogradov, Juri A1 - Engelbrecht, Rainer A1 - Schmauß, Bernhard T1 - Recent Progress in POF OTDR Strain Sensing T2 - International Conference on Plastic Optical Fibers Y1 - 2022 VL - Proceedings 2022 ER - TY - GEN A1 - Engelbrecht, Rainer A1 - Dengler, Simon Andreas A1 - Luber, Michael A1 - Vinogradov, Juri A1 - Ziemann, Olaf T1 - Condition Monitoring with POF: Recent Progress on Geotextiles and Wind Turbines T2 - Proceedings POF2023 Y1 - 2023 ER -