An in-fiber Mach-Zehnder interferometer based on dual side-hole fiber for highly sensitive measurement of curvature

被引：1
作者：
Ouyang, Xiaowei [1 ,2 ]
Guo, Huiyong [1 ]
Zheng, Zhou [1 ]
Ding, Liyun [1 ]
Zhou, Ai [1 ]
机构：
[1] Wuhan Univ Technol, NatlEngn Lab Fiber Opt Sensing Technol, Wuhan 430074, Hubei, Peoples R China
[2] Wuhan Univ Technol, Minist Educ China, Key Lab Fiber Opt Sensing Technol & Informat Proc, Wuhan 430074, Hubei, Peoples R China
来源：
2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS) | 2017年 / 10323卷
关键词：
Mach-Zehnder interferometer; side-hole fiber; curvature; GRATINGS;
D O I：
10.1117/12.2264078
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 in-fiber Mach-Zehnder interferometer (MZI) based on dual side-hole fiber (DSHF) was demonstrated for highly sensitive measurement of curvature. The MZI-based bending sensor is fabricated by fusion splicing a piece of DSHF in between two standard single mode fibers (SMF) with cladding alignment. Due to the existence of the two air holes and the asymmetrical cross-section of the DSHF, the DSHF-based MZI is a core-cladding interferometer which is sensitive to directional bending. The bending characteristics are investigated experimentally within the curvature range of 0-8.172m(-1). The bending sensitivities of the sensor are respectively 1.464 nm/m(-1) and -1.394 nm/m(-1) at their two opposite bending directions.
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页数：4
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