Refractive Index Fiber Laser Sensor by Using Tunable Filter Based on No-Core Fiber

被引：21

作者：

Zhao, Junfa ^{[1
,2
]}

Wang, Juan ^{[1
,2
]}

Zhang, Cheng ^{[1
,2
]}

Guo, Cuijuan ^{[1
,2
]}

Bai, Hue ^{[1
,2
]}

Xu, Wei ^{[1
,2
]}

Chen, Liying ^{[1
,2
]}

Miao, Changyun ^{[1
,2
]}

机构：

[1] Tianjin Polytech Univ, Tianjin Key Lab Optoelect Detect Technol & Syst, Tianjin 300387, Peoples R China

[2] Tianjin Polytech Univ, Sch Elect & Informat Engn, Tianjin 300387, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Fiber laser sensor; no-core fiber; refractive index sensing; OPTICAL-FIBER; MULTIMODE INTERFERENCE; INTERFEROMETER; TEMPERATURE;

D O I：

10.1109/JPHOT.2016.2609598

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：

A novel refractive index fiber laser sensor based on a fiber Bragg grating (FBG) integrated with a section of no-core fiber (NCF) is proposed and experimentally demonstrated. The oscillating wavelength of the fiber laser is only decided by the central wavelength of the FBG that is insensitive to the surrounding refractive index (SRI). However, the output power of the fiber laser varies with the SRI because the laser output is filtered by the edge of the bandpass filter (BPF) formed by the multimode interference (MMI) effect in the NCF, which is sensitive to the SRI. By measuring the variation of the output power, a cost-effective power detection RI sensor could be realized. The fiber laser sensor has a linear relationship with SRI and a sensitivity of 113.73 dB/RIU in the RI range of 1.333-1.4076.

引用

页数：8

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