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Proceedings Paper

Single-mode fiber Mach-Zehnder interferometer as an earth strain sensor
Author(s): An Wang; Haiming Xie
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Paper 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.

Paper Details

Date Published: 1 August 1991
PDF: 4 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50011
Show Author Affiliations
An Wang, Anhui Institute of Optics and Fine Mechanics (China)
Haiming Xie, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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