Abstract

A novel interrogation system for fiber Bragg grating (FBG) sensors with a tunable fiber Fabry-Perot (FFP) wavelength filter is proposed. The system combines a feedback loop arrangement and micro control unit (MCU), which integrates the closed-loop tracking mode into the scanning mode by varying the process of sawtooth voltage. As a result, the wavelengths of fiber grating sensor arrays can be interrogated; moreover, the wavelength of arbitrary FBG under dynamic conditions in the arrays can be tracked and then be locked. A strain resolution of <0.3-ustrain can be realized using this system.

© 2005 Chinese Optics Letters

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1999 (1)

S. Zhang, S. B. Lee, X. Fang, and S. S. Choi, Opt. and Lasers in Eng. 32, 405 (1999).

1998 (1)

1997 (1)

A. D. Kerdey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, J. Lightwave Technol. 15, 490 (1997).

1993 (1)

J. Lightwave Technol. (1)

A. D. Kerdey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, J. Lightwave Technol. 15, 490 (1997).

Opt. and Lasers in Eng. (1)

S. Zhang, S. B. Lee, X. Fang, and S. S. Choi, Opt. and Lasers in Eng. 32, 405 (1999).

Opt. Lett. (2)

Other (1)

R. Falciai, A. Schena, and R. Fontana, Sensors and Microsystems (World Scientific, Singapore, 1995) p.323.

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