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Optical Engineering

Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors
Author(s): Jiang Yi
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Paper Abstract

A stabilizing technique has been developed for a 3×3-coupler-based Mach-Zehnder interferometer, and the interferometer is used to interrogate a fiber Bragg grating (FBG) sensor. The fluctuation of an output can be removed by using the technique. New arithmetic is also introduced to recover the wavelength shifts of the FBG. The experimental results show that stable wavelength shifts of the FBG were obtained. The accurate calculation of modulation amplitude was also demonstrated.

Paper Details

Date Published: 1 January 2008
PDF: 6 pages
Opt. Eng. 47(1) 015006 doi: 10.1117/1.2831129
Published in: Optical Engineering Volume 47, Issue 1
Show Author Affiliations
Jiang Yi, Beijing Institute of Technology (China)


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