Sensitivity enhanced strain and temperature measurements based on FBG and frequency chirp magnification

被引：52

作者：

Du, Jiangbing ^{[1
]}

He, Zuyuan ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 22期

基金：

美国国家科学基金会;

关键词：

FIBER-BRAGG-GRATINGS; SENSOR; TECHNOLOGY; RESOLUTION;

D O I：

10.1364/OE.21.027111

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, highly sensitive measurements of strain and temperature have been demonstrated using a fiber Bragg grating (FBG) sensor with significantly enhance sensitivity by all-optical signal processing. The sensitivity enhancement is achieved by degenerated Four Wave Mixing (FWM) for frequency chirp magnification (FCM), which can be used for magnifying the wavelength drift of the FBG sensor induced by strain and temperature change. Highly sensitive measurements of static strain and temperature have been experimentally demonstrated with strain sensitivity of 5.36 pm/mu epsilon and temperature sensitivity of 54.09 pm/degrees C. The sensitivity has been enhanced by a factor of five based on a 4-order FWM in a highly nonlinear fiber (HNLF). (C) 2013 Optical Society of America

引用

页码：27111 / 27118

页数：8

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