Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system

Youlong Yu; Hwa-Yaw Tam; Wenghong Chung

doi:10.1117/12.446626

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29 October 2001 Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system

Youlong Yu, Hwa-Yaw Tam, Wenghong Chung

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Proceedings Volume 4595, Photonic Systems and Applications; (2001) https://doi.org/10.1117/12.446626
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

An active interrogation technique for a 16-cascaded wavelength-division multiplexing fiber Bragg grating sensor system is proposed. The system has been demonstrated using a combination of a feedback control technique, which makes the transmission of an employed tunable F-P filter track the Bragg wavelength of the interrogated sensor automatically, and a technique for choosing the output wavelength of a ring- compounded-cavity fiber laser by tuning the applied voltage of the filter. Demodulated by using an unbalanced scanning Michelson interferometer, a sensitivity of 1.682 Deg/(mu) (epsilon) has been achieved.

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Youlong Yu, Hwa-Yaw Tam, and Wenghong Chung "Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system", Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); https://doi.org/10.1117/12.446626

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