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Proceedings Paper

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

Paper Details

Date Published: 8 March 2004
PDF: 8 pages
Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); doi: 10.1117/12.513258
Show Author Affiliations
Bing Yu, Virginia Polytechnic Institute and State Univ. (United States)
Gary R. Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 5272:
Industrial and Highway Sensors Technology
Brian Culshaw; Samuel David Crossley; Helmut E. Knee; Michael A. Marcus; John P. Dakin, Editor(s)

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