Fiber refractometer based on a fiber Bragg grating and single-mode-multimode-single-mode fiber structure

被引：124

作者：

Wu, Qiang ^{[1
]}

Semenova, Yuliya ^{[1
]}

Yan, Binbin ^{[2
]}

Ma, Youqiao ^{[1
]}

Wang, Pengfei ^{[1
]}

Yu, Chongxiu ^{[2
]}

Farrell, Gerald ^{[1
]}

机构：

[1] Dublin Inst Technol, Sch Elect & Commun Engn, Photon Res Ctr, Dublin 8, Ireland

[2] Beijing Univ Posts & Telecommun, Key Lab Informat Photon & Opt Commun, Minist Educ, Beijing 100876, Peoples R China

来源：

OPTICS LETTERS | 2011年 / 36卷 / 12期

基金：

爱尔兰科学基金会;

关键词：

SENSORS; FILTER;

D O I：

10.1364/OL.36.002197

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A refractive index (RI) sensor based on a novel fiber structure that consists of a single-mode-multimode-single-mode(SMS) fiber structure followed by a fiber Bragg grating was demonstrated. The multimode fiber in the SMS structure excites cladding modes within output single-mode fiber (SMF) and recouple the reflected cladding Bragg wavelength to the input SMF core. By measuring the relative Bragg wavelength shift between core and cladding Bragg wavelengths, the RI can be determined. Experimentally we have achieved a maximum sensitivity of 7.33 nm/RIU (RI unit) at RI range from 1.324 to 1.439. (C) 2011 Optical Society of America

引用

页码：2197 / 2199

页数：3

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