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A ray-transfer-matrix model for hybrid fiber Fabry-Perot sensor based on graded-index multimode fiber |
Optics Express, Vol. 18, Issue 15, pp. 15844-15852 (2010)
http://dx.doi.org/10.1364/OE.18.015844
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Abstract
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:
Sensors
History
Original Manuscript: May 19, 2010
Revised Manuscript: June 18, 2010
Manuscript Accepted: June 20, 2010
Published: July 12, 2010
Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-15-15844
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