@inproceedings{381b90470e0a4150bbc622aaf754ff64,
title = "Bend-insensitive distributed sensing in singlemode-multimodesinglemode optical fiber structure by using Brillouin optical timedomain analysis",
abstract = "We propose a bend-insensitive distributed Brillouin optical fiber sensing by using a singlemode-multimode-singlemode optical fiber structure for the first time to the best of our knowledge. The sensing fiber is a graded-index multimode fiber (GI-MMF) sandwiched by two standard single-mode fibers (SMFs) with centrally alignment splicing at the interface between GI-MMF and SMF to excite the fundamental mode only in GI-MMF. The sensing system can resist a minimal bend radius of 1.25mm while maintaining the measurement performance, with which the measured coefficient of strain is 421.6MHz/\%. We also demonstrate that the higher-order modes exciting in GI-MMF can be easily influenced by bending, so that the fundamental mode exciting is essential for bend-insensitive distributed sensing.",
keywords = "BOTDA, Bend-insensitive distributed sensing, Singlemode-multimode-singlemode structure",
author = "Pengbai Xu and Hongying Zhang and Zhiwei Lu and Liang Chen and Xiaoyi Bao and Yongkang Dong",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; 24th International Conference on Optical Fibre Sensors, OFS 2015 ; Conference date: 28-09-2015 Through 02-10-2015",
year = "2015",
doi = "10.1117/12.2194416",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kalinowski, \{Hypolito Jose\} and Fabris, \{Jose Luis\} and Bock, \{Wojtek J.\}",
booktitle = "24th International Conference on Optical Fibre Sensors, OFS 2015",
address = "美国",
}