Simultaneous measurement of refractive index and temperature using thinned fiber based Mach-Zehnder interferometer

被引：36

作者：

Li, Lecheng ^{[1
,2
]}

Li, Xia ^{[1
,2
]}

Xie, Zhenhai ^{[1
,2
]}

Liao, Zhaolong ^{[3
]}

Tu, Feng ^{[3
]}

Liu, Deming ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Coll Optoelect Sci & Engn, Wuhan 430074, Peoples R China

[2] Natl Engn Lab Next Generat Internet Access Syst, Wuhan 430074, Peoples R China

[3] Yangtze Opt Fibre & Cable Co Ltd, Wuhan 430073, Hubei, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Thinned fiber; Mach-Zehnder interferometer; Refractive index measurement;

D O I：

10.1016/j.optcom.2012.05.060

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel method for simultaneous measurement of refractive index and temperature based on a small core and cladding diameters thinned fiber Mach-Zehnder interferometer (MZI) using singlemode-multimode-thinned-multimode-singlemode (SMTMS) fiber structure is proposed. Experiments indicate that the selected two interference orders have sensitivities of - 16.1936 nm/RIU and 0.0534 nm/degrees C, and -23.0473 nm/RIU and 0.0575 nm/degrees C, respectively, among RI range from 1.3325-1.3720 and temperature range from 22 degrees C-82 degrees C We can thus use the coefficient matrix of these two peaks to simultaneously determine the surrounding refractive index and temperature. The fabrication is easy, safe and cost effective, includes only the fusion splicing, making the device properly attractive for practical sensor applications. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：3945 / 3949

页数：5

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