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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 15844–15852

A ray-transfer-matrix model for hybrid fiber Fabry-Perot sensor based on graded-index multimode fiber

Yuan Gong, Tian Zhao, Yun-Jiang Rao, Yu Wu, and Yu Guo  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 15844-15852 (2010)

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A theoretical model based on the ray-transfer-matrix method is developed 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 self-focusing effect of the GI-MMF. The influence of the GI-MMF length on the shape of reflective spectrum and corresponding maximum fringe contrast are investigated. 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 (Refractive Index Unit).

© 2010 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot

ToC Category:

Original Manuscript: May 19, 2010
Revised Manuscript: June 18, 2010
Manuscript Accepted: June 20, 2010
Published: July 12, 2010

Yuan Gong, Tian Zhao, Yun-Jiang Rao, Yu Wu, and Yu Guo, "A ray-transfer-matrix model for hybrid fiber Fabry-Perot sensor based on graded-index multimode fiber," Opt. Express 18, 15844-15852 (2010)

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