Optical refractive-index sensor based on dual fiber-Bragg gratings interposed with a multimode-fiber taper

被引：58

作者：

Shao, Li-Yang ^{[1
]}

Zhang, A. Ping

Liu, Wei-Sheng

Fu, Hong-Yan

He, Sailing

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, Dept Opt Engn, Hangzhou 310058, Peoples R China

[2] Royal Inst Technol, Sch Elect Engn, Div Electromagnet Engn, S-10044 Stockholm, Sweden

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 01期

基金：

中国国家自然科学基金;

关键词：

fiber Bragg grating (FBG); fiber-optic sensor; multimode fiber taper (MFT); refractive-index (RI) measurement;

D O I：

10.1109/LPT.2006.889010

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new type of optical refractive-index (RI) sensor is proposed and experimentally demonstrated by using a structure of two single-mode fiber (SMF) Bragg gratings with a multimode fiber (MMF) taper in-between. The loss induced by a mismatch of waveguide structure between SMFs and MMFs is amplified by a tapering process, and is utilized for RI sensing through evanescent field. Experimental results show that the sensor possesses a tailorable sensitivity to the change of external RI and has a good linear response in the simultaneous measurement of external RI and temperature.

引用

页码：30 / 32

页数：3

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