Frequency domain technique for multiplexing of fiber Bragg grating sensors

Peter K. C. Chan; Wei Jin; M. Suleyman Demokan

doi:10.1117/12.369345

11 November 1999 Frequency domain technique for multiplexing of fiber Bragg grating sensors

Peter K. C. Chan, Wei Jin, M. Suleyman Demokan

Proceedings Volume 3897, Advanced Photonic Sensors and Applications; (1999) https://doi.org/10.1117/12.369345
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

We report on the use of a frequency-domain reflectometry technique for multiplexing fiber Bragg grating (FBG) sensors. This technique is based on the modulation of light intensity from a broadband source by a swept-frequency RF carrier. Signals from the FBG sensors located at different positions in an array are separated in the frequency-domain and demodulated using a tunable optical filter. A three FBG sensor system is experimentally demonstrated. The potential of the technique for multiplexing a large number of FBG sensors is discussed.

Citation Download Citation

Peter K. C. Chan, Wei Jin, and M. Suleyman Demokan "Frequency domain technique for multiplexing of fiber Bragg grating sensors", Proc. SPIE 3897, Advanced Photonic Sensors and Applications, (11 November 1999); https://doi.org/10.1117/12.369345

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