Fiber-Optic Viscometer With All-Fiber Acousto-Optic Superlattice Modulated Structure

被引：8

作者：

Qian, Heng ^{[1
]}

Shao, Li-Yang ^{[1
,2
]}

Zhang, Wending ^{[3
,4
]}

Zhang, Xinpu ^{[1
]}

He, Haijun ^{[1
]}

Luo, Bin ^{[1
]}

Pan, Wei ^{[1
]}

Zou, Xihua ^{[1
]}

Yan, Lianshan ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Ctr Informat Photon & Commun, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China

[2] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

[3] Northwestern Polytech Univ, Sch Sci, MOE Key Lab Mat Phys & Chem Extraordinary Condit, Xian 710072, Shaanxi, Peoples R China

[4] Northwestern Polytech Univ, Sch Sci, Shaanxi Key Lab Opt Informat Technol, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2018年 / 36卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Viscometer; acousto-optic superlattice; fiber Bragg grating; BRAGG GRATINGS;

D O I：

10.1109/JLT.2018.2859239

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 present a viscosity sensing method based on a fiber Bragg grating (FBG), which is longitudinally excited by an acoustic transducer. The reflection spectrum of the FBG is broadened by spatial modulation of the FBG caused by the applied acoustic wave. The reflection bandwidth of the acoustically modulated FBG decreases with increasing viscosity of the liquid surrounding the FBG. The sensing mechanism relies on the reduction in spatially periodic strain in the FBG caused by the viscosity of the surrounding fluid. Experimental results show that the bandwidth of the FBG changes from 0.41 to 0.27 nm as the viscosity increases from 1.0 to 5.5 mPa center dot s.

引用

页码：4123 / 4128

页数：6

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