Asymmetrical in-fiber Mach-Zehnder interferometer for curvature measurement

被引：75

作者：

Sun, Bing ^{[1
]}

Huang, Yijian ^{[1
]}

Liu, Shen ^{[1
]}

Wang, Chao ^{[1
]}

He, Jun ^{[1
]}

Liao, Changrui ^{[1
]}

Yin, Guolu ^{[1
]}

Zhao, Jing ^{[1
]}

Liu, Yinjie ^{[1
]}

Tang, Jian ^{[1
]}

Zhou, Jiangtao ^{[1
]}

Wang, Yiping ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 11期

基金：

中国国家自然科学基金;

关键词：

OPTICAL-FIBER; REFRACTIVE-INDEX; LATERAL-OFFSET; SENSOR; TEMPERATURE; SENSITIVITY;

D O I：

10.1364/OE.23.014596

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrated a compact and highly-sensitive curvature sensor based on a Mach-Zehnder interferometer created in a photonic crystal fiber. Such a Mach-Zehnder interferometer consisted of a peanut-like section and an abrupt taper achieved by use of an optimized electrical arc discharge technique, where only one dominating cladding mode was excited and interfered with the fundamental mode. The unique structure exhibited a high curvature sensitivity of 50.5 nm/m(-1) within a range from 0 to 2.8 m(-1), which made it suitable for high-sensitivity curvature sensing in harsh environments. Moreover, it also exhibited a temperature sensitivity of 11.7 pm/degrees C. (C) 2015 Optical Society of America

引用

页码：14596 / 14602

页数：7

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