Research on FBG Wavelength Demodulation System Based on Tilted Fiber Grating

被引：0
|
作者：
Zhan, Ping [1 ,2 ]
Huang, Yonglin [1 ,2 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Microelect, Nanjing 210023, Jiangsu, Peoples R China
来源：
INTERNATIONAL CONFERENCE ON OPTOELECTRONIC AND MICROELECTRONIC TECHNOLOGY AND APPLICATION | 2020年 / 11617卷
关键词：
Tilted fiber Bragg grating; Edge filter; Linear demodulation; Temperature sensing;
D O I：
10.1117/12.2585459
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 fiber Bragg gratings wavelength demodulation system based on tilted fiber grating is designed. The temperature sensing characteristic is researched. The demodulation system is formed by a tilted fiber grating, four sensing FBGs, One broadband light source and four photodetectors. The tilted fiber grating is as edge filter. The central wavelengths of the four FBGs are 1560.0nm, 1561.5nm, 1563.0nm and 1564.5nm respectively. When the temperature increases gradually from 0 degrees C to 105 degrees C, the simulation results show that the demodulation range of four FBGs is from 1560.0nm-1566nm, the sensitivity of FB Gl,FB G2,FB G3 and FB G4 are 0.458 mW/degrees C , 0.564mw/degrees C , 0.651mw/degrees C and 0.559mw/degrees C, respectively. This system provides a new demodulation scheme for array sensing.
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页数：5
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