Production of fiber Bragg grating and application in strain sensors system

Xiangyang Wang; Ying Zha; KaiDe Zha; Yanbiao Liao

doi:10.1117/12.229219

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3 January 1996 Production of fiber Bragg grating and application in strain sensors system

Xiangyang Wang, Ying Zha, KaiDe Zha, Yanbiao Liao

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Proceedings Volume 2594, Self-Calibrated Intelligent Optical Sensors and Systems; (1996) https://doi.org/10.1117/12.229219
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

In this paper, the fabrication of fiber Bragg grating by holography interference is described. A fourth harmonic Nd:YAG laser, acting as an ultraviolet light source, has been used in the experiment. To improve the coherence effect of the laser beam, an F-P etalon and a diaphragm with a little aperture are applied. The sensor system to measure one-dimension strain of cantilever beam or pier based fiber Bragg grating is established and developed. The focus of this development is due to two facts: utility of a tunable outer cavity semiconductor laser in sensing system and the design of new arrangement of sensors. The laser acts as both broadband optical source and demodulator to encoding wavelength. The arrangement of sensors including two fiber Bragg gratings with different Bragg wavelengths, can be applied to discriminate the effect of strain and temperature.

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Xiangyang Wang, Ying Zha, KaiDe Zha, and Yanbiao Liao "Production of fiber Bragg grating and application in strain sensors system", Proc. SPIE 2594, Self-Calibrated Intelligent Optical Sensors and Systems, (3 January 1996); https://doi.org/10.1117/12.229219

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