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Enhanced SNR phase-sensitive OTDR system with active fiber
Author(s): Shengwen Feng; Tuanwei Xu; Jianfen Huang; Yang Yang; Fang Li; Jinming Zhou; Hesper Yu
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Paper Abstract

A simplified approximate theoretical model between phase noise and Rayleigh backscattering (RS) light is introduced to analyze the performance of distributed acoustic sensing, and results show that noise is relative to the static RS amplitude. Er3+-doped active fiber is used to increase RS light and compress system noise. The system phase noise reduces more than 14 dB, a noise level of 9×10-4 rad/√Hz and signal-to-noise ratio of 46.6 dB @ 100 Hz are obtained experimentally.

Paper Details

Date Published: 12 December 2018
PDF: 6 pages
Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108490C (12 December 2018); doi: 10.1117/12.2503844
Show Author Affiliations
Shengwen Feng, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Tuanwei Xu, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Jianfen Huang, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Yang Yang, Hunan Univ. (China)
Fang Li, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Jinming Zhou, Sino Geophysical Co., Ltd. (China)
Hesper Yu, Sino Geophysical Co., Ltd. (China)


Published in SPIE Proceedings Vol. 10849:
Fiber Optic Sensing and Optical Communication
Jie Zhang; Songnian Fu; Qunbi Zhuge; Ming Tang; Tuan Guo, Editor(s)

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