High-Sensitivity Mach-Zehnder Interferometric Temperature Fiber Sensor Based on a Waist-Enlarged Fusion Bitaper

被引：161
|
作者：
Geng, Youfu [1 ]
Li, Xuejin [1 ]
Tan, Xiaoling [2 ]
Deng, Yuanlong [1 ]
Yu, Yongqin [1 ]
机构：
[1] Shenzhen Univ, Shenzhen Key Lab Sensor Technol, Coll Phys Sci & Technol, Shenzhen 518060, Peoples R China
[2] Ningbo Univ, Fac Sci, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2011年 / 11卷 / 11期
基金：
美国国家科学基金会;
关键词：
Fiber taper; Mach-Zehnder interferometer; temperature sensor; MODAL INTERFEROMETER;
D O I：
10.1109/JSEN.2011.2146769
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：
An all-fiber high-sensitivity temperature fiber sensor based on a Mach-Zehnder interferometer in standard single-mode fibers (SMFs) is described. The interferometer consists of two concatenated waist-enlarged fusion bitapers which are fabricated simply by cleaving and fusion splicing. It is demonstrated that such an all-fiber Mach-Zehnder interferometer incorporates intermodal interference between the LP01 mode and a high-order cladding mode of LP07 mode. Its response to temperature is investigated and a high sensitivity of 0.070 nm/degrees C is obtained by a 7.5 mm interferometer. This simple, low-cost and easy-to-fabricate core-cladding modal interferometer with entire SMF-based structure also has great potential in diverse sensing applications.
引用
收藏
页码：2891 / 2894
页数：4
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