Highly sensitive refractive index sensing based on PCF modal interferometer

被引：6
|
作者：
Zeng, Li [2 ]
Dong, Xinran [1 ]
Sun, Xiaoyan [2 ]
Duan, Ji'an [2 ]
机构：
[1] Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, 498 South Shaoshan St, Changsha 410004, Peoples R China
[2] Cent South Univ, Coll Mech & Elect Engn, State Key Lab High Performance Complex Mfg, Changsha 410083, Peoples R China
来源：
OPTIK | 2022年 / 251卷
基金：
中国国家自然科学基金;
关键词：
Refractive index sensor; Mach-Zehnder interferometer; Photonic crystal fiber; Multimode fiber; MACH-ZEHNDER INTERFEROMETER; PHOTONIC CRYSTAL FIBER; SENSOR; GRATINGS; STRAIN; COMPACT;
D O I：
10.1016/j.ijleo.2021.168360
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high sensitive optical fiber refractive index (RI) sensor based on Mach-Zehnder interferometer (MZI) is proposed. The sensor consists of single mode fiber-multimode fiber-photonic crystal fiber-single mode fiber (SMPS) structure using fusion technology. The experimental results have shown that the RI sensitivity of the SMPS structure is as high as 342.78 nm/RIU in the range of 1.3330-1.3775. Meanwhile, the effects of different length of PCF on the RI are also investigated. It was found that the shorter the length of PCF, the higher the sensitivity. In addition, a temperature sensitivity of 16.37 pm/celcius for the sensor is achieved. The sensor has advantages of high fringe visibility over 20 dB and simple fabrication, which has displayed great potential in the field of RI measurement.
引用
收藏
页数：7
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