Temperature insensitive refractive index sensor based on a combination interference structure

被引：1
作者：
Zhao, Yong [1 ,2 ]
Gao, Peng [1 ,3 ]
Hu, Hai-feng [1 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110004, Peoples R China
[2] Proc Ind Technol & Res Ctr Natl Met Automat, Stat Key Lab Integrated Automat, Shenyang 110819, Peoples R China
[3] Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China
来源：
OPTIK | 2015年 / 126卷 / 7-8期
基金：
中国国家自然科学基金;
关键词：
Liquid refractive index sensor; Optical fiber sensor; Photonic crystal fiber; Fiber loop mirror; FIBER; GRATINGS;
D O I：
10.1016/j.ijleo.2015.02.046
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A sensing head consisting of fiber loop mirror inscribed with a highly birefringence photonic crystal fiber (HiBi-PCF) was proposed and experimentally demonstrated. The HiBi-PCF was completely collapsed near the splicing points, thus the cladding mode in the HiBi-PCF would be excited, which was sensitive to the refractive index (RI) of surrounding medium. Owing to the low thermo-optic and thermo-expansion coefficient of the HiBi-PCF, the sensing head in our design was temperature insensitive. High sensitivity of 306.6+/-0.2 nm/RIU (refractive index unit) and a resolution of 6.5 x 10(-5) RIU have been achieved for the proposed liquid refractive index sensor. (C) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：697 / 700
页数：4
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