Fiber-taper seeded long-period grating pair as a highly sensitive refractive-index sensor

被引：204

作者：

Ding, JF ^{[1
]}

Zhang, AP

Shao, LY

Yan, JH

He, SL

机构：

[1] Zhejiang Univ, Dept Opt Engn, Ctr Opt & Electromagnet Res, Hangzhou 310027, Peoples R China

[2] Royal Inst Technol, Div Electromagnet Theory, Alfven Lab, S-10044 Stockholm, Sweden

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 06期

关键词：

fiber taper; long-period fiber gratings; optical fiber sensor; refractive-index (RI) measurement;

D O I：

10.1109/LPT.2005.847437

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 report the fabrication and characterization of it highly sensitive refractive-index sensor based on a long-period grating (LPG) pair with a fiber-taper section in between. Two LPGs with similar to 3-dB transmissivity form an in-fiber Mach-Zehnder interferometer. A fiber taper is made between the two LPGs to improve and tailor the sensitivity of the sensor. Enhanced sensitivity, which is about five times higher than that of a normal LPG pair, is achieved in the experiment.

引用

页码：1247 / 1249

页数：3

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