Cladding-Mode-Recoupling-Based Tilted Fiber Bragg Grating Sensor With a Core-Diameter-Mismatched Fiber Section

被引：40

作者：

Zhou, Bin ^{[1
,2
]}

Zhang, A. Ping ^{[1
]}

He, Sailing ^{[1
,3
]}

Gu, Bobo ^{[1
]}

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China

[2] Zhejiang Univ, Inst Opt, Hangzhou 310027, Peoples R China

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

来源：

IEEE PHOTONICS JOURNAL | 2010年 / 2卷 / 02期

关键词：

Fiber optics; fiber Bragg grating (FBG); fiber-optic sensor; refractive index sensor; LONG-PERIOD; TEMPERATURE; DISCRIMINATION;

D O I：

10.1109/JPHOT.2010.2043246

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：

We demonstrate a reflective fiber-optic sensor with a core-diameter-mismatched fiber section and cladding-mode recoupling in a tilted fiber Bragg grating (TFBG). High-order cladding modes are efficiently excited by either a multimode fiber or a thin-core fiber section and recoupled back to the core mode by the TFBG. A special reflection spectrum with recoupling of cladding mode is then obtained to exploit the applications of evanescent waves in an optical fiber. Experimental results of the sensor to measure the external refractive index are presented.

引用

页码：152 / 157

页数：6

共 21 条

[1] A high sensitivity refractometer based upon a long period grating Mach-Zehnder interferometer [J].