Abstract
An interferometric technique is described to detect and locate perturbations along an optical fiber. This distributed sensor has a position-dependent response to time-varying disturbances such as strain or temperature. A modified Sagnac interferometer configuration that incorporates an additional coupler and a mirror allows separation of the Sagnac and the Mach–Zehnder signals. Operation of the new configuration was verified experimentally with a 100-m-long sensing fiber. The discrepancy between actual and measured locations of disturbances applied to the fiber did not exceed 0.6 m.
© 1998 Optical Society of America
Full Article | PDF ArticleMore Like This
Stephanus J. Spammer, Pieter L. Swart, and André Booysen
Appl. Opt. 35(22) 4522-4525 (1996)
Jingwei Huang, Yongchao Chen, Qiuheng Song, Hekuo Peng, Pengwei Zhou, Qian Xiao, and Bo Jia
Opt. Express 28(17) 24820-24832 (2020)
Qiuheng Song, Pengwei Zhou, Hekuo Peng, Yuhan Hu, Qian Xiao, Hongyan Wu, and Bo Jia
Opt. Express 28(5) 7207-7220 (2020)