Mach-Zehnder Interferometer Based on a Sandwich Fiber Structure for Refractive Index Measurement

被引：45

作者：

Ma, Yue ^{[1
]}

Qiao, Xueguang ^{[1
]}

Guo, Tuan ^{[2
]}

Wang, Ruohui ^{[1
]}

Zhang, Jing ^{[1
]}

Weng, Yinyan ^{[1
]}

Rong, Qiangzhou ^{[1
]}

Hu, Manli ^{[1
]}

Feng, Zhongyao ^{[1
]}

机构：

[1] Northwest Univ, Dept Phys, Xian 710069, Peoples R China

[2] Jinan Univ, Inst Photon Technol, Guangzhou 510632, Guangdong, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2012年 / 12卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Fiber-optic sensor; Mach-Zehnder interferometer; refractive-index measurement; sandwich fiber structure; PHOTONIC-CRYSTAL FIBER; TEMPERATURE; SENSOR;

D O I：

10.1109/JSEN.2012.2184751

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 Mach-Zehnder interferometer composed of an uncoated single-mode fiber section sandwiched between two short sections of multimode fiber is proposed and experimentally demonstrated. A clear interference spectrum is obtained and the dip wavelength shifts as a function of surrounding RI. An estimated resolution of 7.1 x 10(-5) within the linear sensing range from 1.33 to 1.40 and a maximum up to 6.4 x 10(-6) at indexes around 1.44 have been achieved for the cost-effective RI measurement.

引用

页码：2081 / 2085

页数：5

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