Refractive index sensor based on helical long period grating based on dual-hole elliptical core fiber

被引：0
|
作者：
Liu, Chao [1 ]
Zhang, Yu [1 ]
Liu, Zhihai [1 ]
Zhang, Yaxun [1 ]
机构：
[1] Harbin Engn Univ, Minist Educ China, Key Lab Infiber Integrated Opt, Harbin 150001, Heilongjiang, Peoples R China
来源：
2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS) | 2017年 / 10323卷
基金：
中国国家自然科学基金;
关键词：
refractive index sensor; long period grating; dual-hole elliptical core fiber; helical structure;
D O I：
10.1117/12.2267458
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：
In this paper, the fabrication of a novel refractive index sensor based on helical long period grating (HLPG) written in a dual-hole elliptical core fiber (DHECF) was demonstrated and the sensing characteristic was experimentally investigated. Due to the structure of the DHECF, The proposed HLPG sensor could work with ultra-small dose testing samples. In addition, since the sample is isolated from the external environment, the testing is immunity to the external interference. The experimental results showed that the testing sensitivity of the sensor was 194nm/RIU with the refractive index range of 1.333 to 1.385. The proposed structure will have a good practicability in the microfluidic sensing system.
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页数：4
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