High Sensitivity Twist Sensor Based on Helical Long-Period Grating Written in Two-Mode Fiber

被引：101

作者：

Zhang, Liang ^{[1
,2
]}

Liu, Yunqi ^{[1
]}

Zhao, Yunhe ^{[1
]}

Wang, Tingyun ^{[1
]}

机构：

[1] Shanghai Univ, Sch Commun & Informat Engn, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China

[2] Nanjing Xiaozhuang Univ, Sch Elect Engn, Nanjing 211171, Jiangsu, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Helical long-period grating; two-mode fiber; twist sensor; FREQUENCY CO2-LASER PULSES; TORSION SENSOR; TEMPERATURE; RESONANCE; COUPLER;

D O I：

10.1109/LPT.2016.2555326

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 demonstrate the fabrication of the helical long-period grating (HLPG) in a two-mode fiber (TMF) with CO2 laser. The torsion characteristics of the helical gratings are experimentally investigated. It was found that the resonance wavelength of the TMF-HLPG linearly shifts with a twist sensitivity of 0.47 nm/(rad/m), which is an order magnitude higher than that of the conventional long-period fiber gratings (LPFGs). The temperature sensitivity of the TMF-HPFG was measured to be 23.9 pm/degrees C, which is one third of that of the conventional LPFGs. The proposed TMF-HLPG-based twist sensor would have a promising application for the twist monitor.

引用

页码：1629 / 1632

页数：4

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