Grating-assisted operating-point tuning for fiber optic Fabry-Perot interferometric sensors

Bing Yu; Gary R. Pickrell; Anbo Wang

doi:10.1117/12.513258

8 March 2004 Grating-assisted operating-point tuning for fiber optic Fabry-Perot interferometric sensors

Bing Yu, Gary R. Pickrell, Anbo Wang

Proceedings Volume 5272, Industrial and Highway Sensors Technology; (2004) https://doi.org/10.1117/12.513258
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

A grating-assisted operating-point tuning system was designed to dynamically stabilize the operating-point of a fiber Fabry-Perot interferometric sensor to compensate for manufacturing errors and environment perturbation induced drifts. The system uses a diffraction grating and a feedback control, functioning as a tunable bandpass optical filter, and can be used as an effective demodulation subsystem in sensor systems based on optical interferometers using a broadband light source. This demodulation method features unlimited signal detection bandwidth, high tuning speed, large tunable range, increased interference fringe contrast, and a potential of absolute optical path difference measurement. Sensitivity improvements were demonstrated with a fiber Fabry-Perot acoustic wave sensor system.

Citation Download Citation

Bing Yu, Gary R. Pickrell, and Anbo Wang "Grating-assisted operating-point tuning for fiber optic Fabry-Perot interferometric sensors", Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); https://doi.org/10.1117/12.513258

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