TY - CONF A1 - Schreier, Andy T1 - Distributed Brillouin sensors based on POF - a brief overview N2 - Easy to handle and stretchable polymer optical fibres for sensor applications Basic idea of stimulated Brillouin scattering Brillouin threshold for PMMA-POF and PFGI-POF in comparison Sensorial behavior of Brillouin scattering in PFGI-POF and silica SMF Basics and classification of distributed Brillouin sensing methods Basic idea of dynamic Brillouin sensing T2 - Institutsseminar Hochfrequenztechnik CY - Technische Universität Braunschweig, Germany DA - 24.01.2017 KW - Distributed sensing KW - Brillouin KW - Polymer optical fibre PY - 2017 AN - OPUS4-39030 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreier, Andy A1 - Wosniok, Aleksander A1 - Krebber, Katerina T1 - POF-based distributed Brillouin sensing N2 - In this presentation the need of distributed Brillouin sensors in POF is underlined. In-situ structual health monitoring applications were shown and a possible experimental setup was presented. T2 - The Fiber Society’s Spring 2017 Conference CY - Aachen, Germany DA - 17.05.2017 KW - Brillouin KW - Distributed sensing KW - Polymer optical fibre PY - 2017 AN - OPUS4-40315 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreier, Andy A1 - Wosniok, Aleksander T1 - Toward investigation of Brillouin scattering in multimode polymer and silica optical fibers N2 - In this paper, we present a study aimed at characterizing the optimal fiber optic components for Brillouin sensing in multimode fibers. For this purpose the use of single-mode and multimode circulators as well as couplers typically used in the Brillouin measurement setups was investigated. On the one hand the undesired coupling losses between conventional fiber optic measurement system components and a multimode sensor fiber can be overcome by replacing the single-mode components with their own multimode equivalents. On the other hand the use of multimode fiber optic circulators and multimode couplers affects the mode distribution of laser light which can impair the measurement signal backscattered in the multimode sensor fibers. In view of an increasing interest in high strain measurements using polymer optical fibers (POFs) as Brillouin-distributed sensors the investigation on Brillouin scattering effects in multimode fibers (MMFs) was performed on a low-loss perfluorinated graded-index polymer optical fiber (PFGI-POF). The obtained results were compared with those of a standard graded-index multimode (GI-MMF) silica glass optical fiber (GOF). This study confirms the relevance of the adaptation of the measurement system components to the use of the multimode sensor fibers. In addition, due to mode coupling effects occurring in the tested POF itself, the results show differences in the yield of the components adaptation in the sensory implementation of the two kinds of the tested optical fibers. T2 - SPIE’s 2017 International Symposium on Optics & Optoelectronics: Micro-structured and Specialty Optical Fibres CY - Prag, Czech Republic DA - 26.04.2017 KW - Brillouin KW - Distributed sensing KW - Polymer optical fibre PY - 2017 AN - OPUS4-40318 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreier, Andy T1 - POF-based Distributed Brillouin Sensing N2 - In this presentation the need of distributed Brillouin sensors in POF is underlined. The usage of FBGs for measurment improvements was presented. In-situ structual health monitoring applications were shown and a possible experimental setup was presented. T2 - Presentation at Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute CY - Goslar, Germany DA - 15.08.2017 KW - Brillouin KW - Distributed sensing KW - Polymer optical fibre PY - 2017 AN - OPUS4-41386 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -