Breaking through the intensity restriction of the asymmetric fiber Bragg grating based Fabry-Perot sensitivity enhancement system

Wei Wang; Zhengliang Hu; Peng Jiang; Guangming Li; Yongming Hu

doi:10.1117/12.2068502

21 August 2014 Breaking through the intensity restriction of the asymmetric fiber Bragg grating based Fabry-Perot sensitivity enhancement system

Wei Wang, Zhengliang Hu, Peng Jiang, Guangming Li, Yongming Hu

Author Affiliations +

Proceedings Volume 9285, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials for Manufacturing and Testing; 92850G (2014) https://doi.org/10.1117/12.2068502
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

As one of the main factors of restricting the fiber Bragg grating based Fabry–Perot (FBG-based F-P) sensitivity enhancement system, the intensity will be more and more unbalanced and weakened following the improvement of sensitivity enhancing ability. In this paper, intensity unbalance of the pulse train is analyzed. A secondary wave chopping, amplifying and filtering modified scheme is proposed to solve it. A four centimeters diameter compliant cylinder fiber optic accelerometer is fabricated. An experiment is set to validate the improved system. The phase sensitivity calibration results are consistent with the theory well and truly by phase-generated carrier (PGC) scheme. This system achieves 20 times (26 dB) sensitivity enhancement and 10 dB noise floor improvement at the same time successfully.

Citation Download Citation

Wei Wang, Zhengliang Hu, Peng Jiang, Guangming Li, and Yongming Hu "Breaking through the intensity restriction of the asymmetric fiber Bragg grating based Fabry-Perot sensitivity enhancement system", Proc. SPIE 9285, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials for Manufacturing and Testing, 92850G (21 August 2014); https://doi.org/10.1117/12.2068502

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