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Proceedings Paper

Modeling of a long-period fiber-optic grating-assisted surface plasmon resonance refractive index sensor
Author(s): Wenhua Wang; Weina Wu; Jiang Huang; Xiuyun Tian; Xianxiang Fei
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Paper Abstract

A fiber-optic refractive index sensor assisted surface Plasmon resonance of metal dielectric layer around a longperiod fiber-optic grating with hollow fiber core has been proposed and comprehensively analyzed. Its operation principle is based on the efficient energy transfer between the fiber waveguide mode and the co-directional surface Plasmon waves excited with a long-period fiber-optic grating properly designed by the light refracted through the interface between the waveguide area and the metal dielectric film. The long-period fiber-optic grating is fabricated on a waveguide area of a specially designed fiber-optic with hollow fiber core. Simulations have been carried out in coupled mode theory of fiber-optic gratings in the wavelength ranges from 1500 to 1600nm, and for sensing characteristics of refractive index. Unlike a previous proposed fiber Bragg grating fabricated on this kind of fiber, t the sensitivity of the long-period fiber-optic grating SPR refractive index sensor is much higher than that of a FBG in the same structure. The proposed long-period fiber-optic refractive index sensor assisted surface Plasmon resonance is compact, light weight, and highly sensitive with a large sensing range

Paper Details

Date Published: 4 November 2016
PDF: 6 pages
Proc. SPIE 10025, Advanced Sensor Systems and Applications VII, 100251C (4 November 2016); doi: 10.1117/12.2245928
Show Author Affiliations
Wenhua Wang, Guangdong Ocean Univ. (China)
Weina Wu, Guangdong Ocean Univ. (China)
Jiang Huang, Guangdong Ocean Univ. (China)
Xiuyun Tian, Guangdong Ocean Univ. (China)
Xianxiang Fei, Guangdong Ocean Univ. (China)

Published in SPIE Proceedings Vol. 10025:
Advanced Sensor Systems and Applications VII
Tiegen Liu; Shibin Jiang; Rene Landgraf, Editor(s)

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