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Proceedings Paper

Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system
Author(s): Youlong Yu; Hwa-Yaw Tam; Wenghong Chung
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Paper 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.

Paper Details

Date Published: 29 October 2001
PDF: 5 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446626
Show Author Affiliations
Youlong Yu, Heilongjiang Univ. and Hong Kong Polytechnic Univ. (China)
Hwa-Yaw Tam, Hong Kong Polytechnic Univ. (China)
Wenghong Chung, Hong Kong Polytechnic Univ. (Hong Kong)

Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications

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