Advanced signal processing method for interferometric fiber optic sensors with straightforward spectral detection

Sergey A. Egorov; Anatoly N. Mamaev; Igor G. Likhachiev; Yuri A. Ershov; Arkady S. Voloshin; Eliesar Nir

doi:10.1117/12.298023

2 January 1998 Advanced signal processing method for interferometric fiber optic sensors with straightforward spectral detection

Sergey A. Egorov, Anatoly N. Mamaev, Igor G. Likhachiev, Yuri A. Ershov, Arkady S. Voloshin, Eliesar Nir

Author Affiliations +

Proceedings Volume 3201, Sensors and Controls for Advanced Manufacturing; (1998) https://doi.org/10.1117/12.298023
Event: Intelligent Systems and Advanced Manufacturing, 1997, Pittsburgh, PA, United States

Abstract

The advanced method for straightforward spectral signal processing in interferometric fiber-optic sensors is presented. It is based on the analysis of the output spectrum of sensing interferometer in the domain of Fourier images. The main idea of the proposed method is to use the sensing interferometer with finesse > 2 and process the higher harmonics in addition to the first one. The technique does not suffer from power and spectral fluctuations of LED and sufficiently noise resistant.It is insensitive to the influence of parasitic interferometers appearing in the optical connectors, multimode fibers and other parts of the instrument. Devices based on such principles does not recalibration after switching on and further operation. The optimization of sensor's parameters based on numerical simulations is presented switching on and further operation. The optimization of sensor's parameters based on numerical simulations is presented.

Citation Download Citation

Sergey A. Egorov, Anatoly N. Mamaev, Igor G. Likhachiev, Yuri A. Ershov, Arkady S. Voloshin, and Eliesar Nir "Advanced signal processing method for interferometric fiber optic sensors with straightforward spectral detection", Proc. SPIE 3201, Sensors and Controls for Advanced Manufacturing, (2 January 1998); https://doi.org/10.1117/12.298023

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