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
收藏
页码：2081 / 2085
页数：5
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