23 February 2001 Active demodulation system for multiplexed FBG sensors
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Proceedings Volume 4357, Distributed Fiber Optical Sensors and Measuring Networks; (2001) https://doi.org/10.1117/12.417880
Event: Distributed Fiber Optical Sensors and Measuring Networks, 2000, none, Russian Federation
Abstract
An active wavelength demodulation approach with high- resolution for fiber Bragg grating sensor is proposed and demonstrated for multiplexed temperature measurement in this paper. A tunable fiber laser controlled by computer is used as the scanning light source. And the computer synchronously performs data gathering and processing. Here Gaussian-Newton curve fitting approach is used to determine the Bragg wavelength of the grating sensors. A resolution approximately +/- 0.1 pm, corresponding to approximately +/- 0.01 degree(s)C has been demonstrated using this approach.
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Bai'ou Guan, Xinyong Dong, Zhiguo Liu, Xiaoyi Dong, Hwa-Yaw Tam, "Active demodulation system for multiplexed FBG sensors", Proc. SPIE 4357, Distributed Fiber Optical Sensors and Measuring Networks, (23 February 2001); doi: 10.1117/12.417880; https://doi.org/10.1117/12.417880
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