Performance analysis of a time-division-multiplexed fiber Bragg grating sensor

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

doi:10.1117/12.397910

31 August 2000 Performance analysis of a time-division-multiplexed fiber Bragg grating sensor

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

Proceedings Volume 4074, Applications of Optical Fiber Sensors; (2000) https://doi.org/10.1117/12.397910
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

Abstract

The results of an investigation of the performance of a time-division-multiplexed fiber Bragg grating (FBG) sensor array using a tunable laser source are reported. The system performance is found to be limited by the extinction ratio of the optical pulse modulator used for pulse amplitude modulation. Formulas that relate the crosstalk to the extinction ratio of the optical pulse modulator, the modulation parameters of the tunable laser, and the optical path differences among sensing channels are derived. Computer simulation shows that an array of 20 FBG sensors with 3 (mu) (epsilon) resolution can be realized with a commercially available single Mach-Zehnder type optical pulse modulator of -35 dB extinction ratio.

Citation Download Citation

Calvin C.K. Chan, Wei Jin, and M. Suleyman Demokan "Performance analysis of a time-division-multiplexed fiber Bragg grating sensor", Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); https://doi.org/10.1117/12.397910

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