Single-mode fiber Mach-Zehnder interferometer as an earth strain sensor

An Wang; Haiming Xie

doi:10.1117/12.50011

1 August 1991 Single-mode fiber Mach-Zehnder interferometer as an earth strain sensor

An Wang, Haiming Xie

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50011
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

Abstract

A single-mode fiber-optic Mach-Zehnder interferometric strain sensor has been developed which uses many turns of single-mode optical fibers in the sensing arm to amplify the effects of earth strain. Homodyne with dc-phase tracking (PTDC) has been used to detect the phase shift of less than 10-3 rad. Laboratory experiments show that the fiber-optic strain sensor can measure the strain on the order of 10-12.

Citation Download Citation

An Wang and Haiming Xie "Single-mode fiber Mach-Zehnder interferometer as an earth strain sensor", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50011

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