Dumbbell-Shaped Mach-Zehnder Interferometer With High Sensitivity of Refractive Index

被引:23
|
作者
Wen, Xiaodong [1 ]
Ning, Tigang [1 ]
You, Haidong [1 ]
Li, Jing [1 ]
Feng, Ting [1 ]
Pei, Li [1 ]
Jian, Wei [1 ]
机构
[1] Beijing Jiaotong Univ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
基金
中国国家自然科学基金;
关键词
Fiber-optic sensor; fiber tapers; Mach-Zehnder Interferometer;
D O I
10.1109/LPT.2013.2277611
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 proposed and fabricated a dumbbell-shaped Mach-Zehnder interferometer (MZI) on a single mode fiber using a revised program of the fusion splicer. To the best of our knowledge, it is the first time one has produced and applied the MZI of this configuration to detect liquids refractive indexes. The dumbbell shape has a length of 1.9 mm and a minimum waist diameter of 63 mu m. The wavelengths shift with the changing of surrounding refractive indexes, and the refractive index sensitivity is as high as 251 nm per refractive index unit with the linear range of 1.333-1.391 that is tens of times higher than the MZI based on two fiber tapers.
引用
收藏
页码:1839 / 1842
页数:4
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