Fiber-optic Fabry-Perot sensor based on graded-index multimode fiber: numerical simulations and experiments

Yuan Gong; Tian Zhao; Yun-Jiang Rao; Yu Wu; Yu Guo

doi:10.1117/12.884856

17 May 2011 Fiber-optic Fabry-Perot sensor based on graded-index multimode fiber: numerical simulations and experiments

Yuan Gong, Tian Zhao, Yun-Jiang Rao, Yu Wu, Yu Guo

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775315 (2011) https://doi.org/10.1117/12.884856
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

Numerical simulations based on the ray-transfer-matrix (RTM) method is realized for explaining the principle of a graded-index multimode fiber (GI-MMF) based hybrid fiber Fabry-Perot (GI-FFP) sensor. It is verified by the numerical simulations and experimental results that the high fringe contrast of the reflective spectrum of the sensor is due to the periodic focusing effect of the GI-MMF. Experimental results are in good agreement with the theory. A typical GI-FFP sensor is fabricated and its response to the external refractive index is measured with a maximum sensitivity of ~160 dB/RIU.

Citation Download Citation

Yuan Gong, Tian Zhao, Yun-Jiang Rao, Yu Wu, and Yu Guo "Fiber-optic Fabry-Perot sensor based on graded-index multimode fiber: numerical simulations and experiments", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775315 (17 May 2011); https://doi.org/10.1117/12.884856

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