1 January 2008 Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors
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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.
© (2008) Society of Photo-Optical Instrumentation Engineers (SPIE)
Jiang Yi, "Stabilized 3×3-coupler-based interferometer for the demodulation of fiber Bragg grating sensors," Optical Engineering 47(1), 015006 (1 January 2008). https://doi.org/10.1117/1.2831129 . Submission:
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