A High Sensitivity Curvature Sensor Based on Microfiber Mach-Zehnder Interferometer With Tapered Seven-Core Fiber

被引：20

作者：

Ji, Yancheng ^{[1
]}

Sun, Dan ^{[1
]}

Chen, Yupei ^{[1
]}

Shi, Yuechun ^{[2
]}

Cao, Juan ^{[1
]}

Zhang, Guoan ^{[1
]}

Han, Zhanghua ^{[3
,4
]}

Wang, Chinhua ^{[5
,6
]}

Zhu, Xiaojun ^{[1
,7
,8
]}

机构：

[1] Nantong Univ, Sch Informat Sci & Technol, Nantong 226019, Peoples R China

[2] Nanjing Univ, Key Lab Intelligent Opt Sensing & Manipulat, Minist Educ, Nanjing 210093, Peoples R China

[3] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Key Lab Opt & Photon Devices, Jinan 250358, Peoples R China

[4] Shandong Normal Univ, Shandong Prov Engn & Tech Ctr Light Manipulat, Sch Phys & Elect, Jinan 250358, Peoples R China

[5] Soochow Univ, Inst Modern Opt Technol, Suzhou 215000, Peoples R China

[6] Jiangsu High Tech Key Lab Adv Opt Mfg Technol, Suzhou 215000, Peoples R China

[7] Soochow Univ, Key Lab Adv Opt Mfg Technol Jiangsu Prov, Suzhou 215006, Peoples R China

[8] Soochow Univ, Key Lab Modern Opt Technol, Educ Minist China, Suzhou 215006, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2021年 / 21卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensors; Optical fibers; Sensors; Sensitivity; Optical interferometry; Temperature sensors; Temperature measurement; Microfiber; Mach-Zehnder interferometer; seven-core fiber; curvature sensor; CORE FIBER; TEMPERATURE; LASER;

D O I：

10.1109/JSEN.2021.3110648

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 Microfiber Mach-Zehnder interferometer (MMZI) based on tapered seven-core fiber (SCF) for curvature measurement has been reported and demonstrated. The tapered SCF promoted the light coupling efficiency from the single-mode fiber (SMF) to the SCF, which results in the transmission spectrum with a low loss and high extinction ratio. In the process of curvature measurement, the sensitivity can reach up to 174.02957 nm/m(-1), which is the highest curvature sensitivity in the MZI with SCF as best as we have known. Furthermore, the maximum temperature sensitivity is 0.00956 nm/degrees C when the temperature changes from 30 degrees C to 140 degrees C. It shows that this sensor is naturally insensitive to temperature, which has a good performance in avoiding the cross-sensitivity effect between the temperature and curvature.

引用

页码：24090 / 24097

页数：8

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