Spectrally encoded fiber optic sensors based on Fabry-Perot interferometer

Sergey A. Egorov; Yuri A. Ershov; Igor G. Likhachiev; Anatoly N. Mamaev

doi:10.1117/12.151115

13 August 1993 Spectrally encoded fiber optic sensors based on Fabry-Perot interferometer

Sergey A. Egorov, Yuri A. Ershov, Igor G. Likhachiev, Anatoly N. Mamaev

Proceedings Volume 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine; (1993) https://doi.org/10.1117/12.151115
Event: 8th Meeting in Israel on Optical Engineering, 1992, Tel Aviv, Israel

Abstract

The micro-optic Fabry-Perot interferometer as a spectral transducer for fiber optic sensors is described. Signal processing includes the simultaneous detection of several resonances of the FPI response function in the spectral domain and the recovery of interference order for the exploited resonance. The application of this approach in displacement pressure and temperature sensors is demonstrated. The absolute accuracy of displacement sensing less than 1 nm was obtained. The dynamic range of the devices based on the proposed principles can be as large as 50 dB.

Citation Download Citation

Sergey A. Egorov, Yuri A. Ershov, Igor G. Likhachiev, and Anatoly N. Mamaev "Spectrally encoded fiber optic sensors based on Fabry-Perot interferometer", Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); https://doi.org/10.1117/12.151115

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