文献类型：会议论文

英文题名：Modeling of a long-period fiber-optic grating assisted surface Plasmon resonance refractive index sensor

作者：Wang Wenhua[1];Wu Weina;Huang Jiang;Tian Xiuyun;Fei Xianxiang

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China; Guangdong Ocean Univ, Sch Math & Comp, Zhanjiang 524088, Guangdong, Peoples R China

会议论文集：Conference on Advanced Sensor Systems and Applications VII

会议日期：OCT 12-14, 2016

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：fiber-optic sensors; long-period fiber-optic grating (LPFG); surface Plasmon resonance (SPR); refractive index

外文摘要：A fiber-optic refractive index sensor assisted surface Plasmon resonance of metal dielectric layer around a long-period 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.