TY - CONF A1 - Liehr, Sascha A1 - Burgmeier, J. A1 - Krebber, Katerina A1 - Schade, W. ED - Liao, Y. ED - Jin, W. ED - Sampson, D.D. ED - Yamauchi, R. ED - Chung, Y. ED - Nakamura, K. ED - Rao, Y. T1 - Fiber optic bend and temperature sensing in femtosecond laser-structured POF T2 - OFS2012 - 22nd International conference on optical fiber sensors (Proceedings) N2 - We propose focused femtosecond laser irradiation to create stable and permanent scattering damage in large-core polymer optical fibers. Possible sensing applications using optical time domain reflectometry are discussed and presented. Experiments show that quasi-distributed fiber bend sensors and absolute temperature sensors can be realized by evaluating backscatter intensities. T2 - OFS2012 - 22nd International conference on optical fiber sensors CY - Beijing, China DA - 2012-10-15 KW - Polymer optical fiber KW - POF KW - Optical fiber sensors KW - Bend sensor KW - Temperature sensor KW - Femtosecond laser KW - OTDR KW - Reflectometry PY - 2012 DO - https://doi.org/10.1117/12.976051 SN - 0277-786X SN - 1996-756X N1 - Serientitel: Proceedings of SPIE – Series title: Proceedings of SPIE IS - 8421 SP - 84213I-1 - 84213I-4 PB - SPIE, the International Society for Optical Engineering CY - Bellingham, Wash. AN - OPUS4-27221 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha A1 - Burgmeier, J. A1 - Krebber, Katerina T1 - Quasi-distributed fiber bend and temperature measurement in femtosecond laser-structured POF T2 - POF 2013 - 22nd International conference on plastic optical fibers (Proceedings) N2 - We propose to use focused femtosecond laser pulses to inscribe Scattering damage in the core of polymer optical fibers for interrogation as quasi-distributed sensor points by optical time domain reflectometry. Fiber bend measurement is demonstrated on off-center inscribed sensor points and absolute temperature measurement is presented by evaluation of the constant backscatter intensities from the inscribed structures relative to temperature-dependent Rayleigh Scattering. Application possibilities and limitations of this new approach are discussed. T2 - POF 2013 - 22nd International conference on plastic optical fibers CY - Búzios, Rio de Janeiro, Brazil DA - 11.09.2013 KW - POF KW - Polymer optical fiber KW - Femtosecond laser KW - Optical fiber sensors KW - OTDR KW - Backscatter measurement PY - 2013 SP - 279 EP - 284 CY - Rio de Janeiro, Brazil AN - OPUS4-30082 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -