Temperature-independent curvature sensor based on tapered photonic crystal fiber interferometer

被引：68

作者：

Ni, Kai ^{[1
]}

Li, Tao ^{[1
]}

Hu, Limin ^{[1
]}

Qian, Wenwen ^{[1
]}

Zhang, Quanyao ^{[1
]}

Jin, Shangzhong ^{[1
]}

机构：

[1] China Jiliang Univ, Inst Optoeletron Technol, Hangzhou 310018, Zhejiang, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 24期

基金：

中国国家自然科学基金;

关键词：

Optical fiber sensors; Curvature; Fiber tapers; Photonic crystal fibers; Mach-Zehnder interferometers;

D O I：

10.1016/j.optcom.2012.08.037

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A temperature-independent highly-sensitive curvature sensor by using a tapered-photonic crystal fiber (PCF)-based Mach-Zehnder interferometer (MZI) is proposed and experimentally demonstrated. It is fabricated by sandwiching a tapered-PCF between two standard single mode fibers (SMFs) with the air holes of the PCF in the fusion splicing region being fully collapsed. The tapering of PCF is found to enhance the sensitivity significantly. Large curvature sensitivities of 2.81 dB/m(-1) and 8.35 dB/m(-1) are achieved in the measurement ranges of 0.36-0.87 m(-1) and 0.87-1.34 m(-1), respectively, with the resolution of 0.0012 m(-1) being guaranteed. The proposed sensor also shows negligible temperature sensitivity less than 0.006 dB/degrees C. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：5148 / 5150

页数：3

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