Refractive index sensing with Mach-Zehnder interferometer based on concatenating two single-mode fiber tapers

被引：300

作者：

Tian, Zhaobing ^{[1
]}

Yam, Scott S. -H. ^{[2
]}

Barnes, Jack ^{[3
]}

Bock, Wojtek ^{[4
]}

Greig, Patricia ^{[5
]}

Fraser, James M. ^{[1
]}

Loock, Hans-Peter ^{[3
]}

Oleschuk, Richard D. ^{[3
]}

机构：

[1] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada

[2] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada

[3] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

[4] Univ Quebec Outaouais, Dept Informat & Ingn, Ctr Rech Photon, Gatineau, PQ J8X 3X7, Canada

[5] Canadian Microelect Corp, Adv Photon Syst Lab, Kingston, ON K7L 3N6, Canada

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2008年 / 20卷 / 5-8期

关键词：

fiber tapers; long-period grating (LPG); Mach-Zehnder (MZ) interferometer; refractive index (RI) sensor;

D O I：

10.1109/LPT.2008.919507

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 novel refractive index (RI) sensor based on a fiber Mach-Zehnder interferometer was realized by concatenating two single-mode fiber tapers separated by a middle section. The proposed device had a minimum insertion loss of 3 dB and maximum interferometric extinction ratio over 20 dB. The resolution (0.171 nm) of the two-taper sensor to its surrounding RI change (0.01) was found to be comparable to that (0.252 nm) of similar structures made from an identical long-period gratings pair, and its ease of fabrication makes it a low-cost alternative to existing sensing applications.

引用

页码：626 / 628

页数：3

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