14 May 2018 Secondary Bragg grating based fiber sensors for the application in high temperature environment
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Abstract
As one of the most proven fiber optic sensors, novel fiber Bragg gratings are continually investigated to extend their roles in extreme environments. In this paper, a newly found “secondary Bragg grating” (SBG) is proposed. The presence of SBG occurs in the case of the type-IIa Bragg grating inscribed in small active fibers, where an additional resonance appears at the shorter wavelength. The SBG provides a variety of interesting characteristics, such as the dip integration, high temperature resistance and high reflectivity, showing promising potential in high temperature sensing.
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Yang Ran, Yang Ran, Fu-Rong Feng, Fu-Rong Feng, Long Jin, Long Jin, Bai-Ou Guan, Bai-Ou Guan, } "Secondary Bragg grating based fiber sensors for the application in high temperature environment", Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 106540A (14 May 2018); doi: 10.1117/12.2302806; https://doi.org/10.1117/12.2302806
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