Performance comparison of fiber Bragg gratings sensor interrogation using two kinds of wavelength-swept lasers

Ik Gon Park; Byeong Kwon Choi; Yong Seok Kwon; Min Yong Jeon

doi:10.1117/12.974906

17 October 2012 Performance comparison of fiber Bragg gratings sensor interrogation using two kinds of wavelength-swept lasers

Ik Gon Park, Byeong Kwon Choi, Yong Seok Kwon, Min Yong Jeon

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84214M (2012) https://doi.org/10.1117/12.974906
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We report a performance comparison of fiber Bragg gratings (FBGs) sensor interrogation using two kinds of wavelength swept lasers. In a wavelength swept laser with a fiber Fabry-Perot tunable filter (FFP-TF), the reflected signal from the FBGs in temporal domain has a nonlinear response with respect to the sinusoidal modulation signal. The output of the time delay for the strained FBGs sensor array in the wavelength swept laser with FFP-TF has different slope coefficient for each FBGs, while the reflected output of the strained FBGs in the wavelength swept laser with polygon scanning filter has same slope coefficient for each FBGs.

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Ik Gon Park, Ik Gon Park, Byeong Kwon Choi, Byeong Kwon Choi, Yong Seok Kwon, Yong Seok Kwon, Min Yong Jeon, Min Yong Jeon, "Performance comparison of fiber Bragg gratings sensor interrogation using two kinds of wavelength-swept lasers", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214M (17 October 2012); doi: 10.1117/12.974906; https://doi.org/10.1117/12.974906

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