Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors

Yi Jiang

doi:10.1117/1.2831129

Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors

Yi Jiang^*

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

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.

Original language	English
Article number	015006
Journal	Optical Engineering
Volume	47
Issue number	1
DOIs	https://doi.org/10.1117/1.2831129
Publication status	Published - 2008

Keywords

fiber Bragg grating
fiber optical sensor
interferometer

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10.1117/1.2831129

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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.",

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AB - 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.

KW - fiber Bragg grating

KW - fiber optical sensor

KW - interferometer

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Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors

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Keywords

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