Use of 3×3 Coupler in the Fiber Optic Strainmeter Based on Mach-Zehnder Interferometer


In this paper a strainmeter based on the fiber optic Mach-Zehnder interferometer with 3x3 coupler for a phase shift demodulation is presented. Laboratory experiments on registration of harmonic deformation with the use of strainmeter were carried out. The experiment demonstrates efficiency of the strainmeter.

Keywords: strainmeter, interferometer, coupler

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