Abstract
A novel polarization optical time domain reflectometry (POTDR) with high degree of polarization is proposed for multi-event detection. By employing multiple optical fiber couplers and fiber mirrors, an arbitrary number and customized length of sensing fiber can be multiplexed into the system without modification of the other components, e.g., the light source, photodetector, signal processing device, etc. More importantly, the signal-to-noise ratio of this system is significantly improved, and the temporal depolarization effect can be almost completely suppressed. Additionally, the system response time is considerably reduced by dispensing with data averaging, so that intrusion events such as touching and moving fiber can be detected instantaneously and precisely located. Experiments have been conducted that proved the capability of multi-event simultaneous detection and vibration frequency measurement. This system promises application potential in multi-zone perimeter security and physical field measurement.
© 2017 Optical Society of America
Full Article | PDF ArticleOSA Recommended Articles
Chaodong Wang, Ruolin Liao, Wenbo Chen, Ming Tang, Songnian Fu, Jianguan Tang, Ciming Zhou, and Deming Liu
Opt. Express 25(5) 5550-5558 (2017)
Ziyi Zhang and Xiaoyi Bao
Opt. Express 16(14) 10240-10247 (2008)
Fei Peng, Han Wu, Xin-Hong Jia, Yun-Jiang Rao, Zi-Nan Wang, and Zheng-Pu Peng
Opt. Express 22(11) 13804-13810 (2014)