Bend-Loss-Free Distributed Sensor Based on Rayleigh Backscattering in Ge-Doped-Core PCF

被引：15
作者：
Naeem, Khurram [1 ]
Kwon, Yong-Seok [1 ]
Chung, Youngjoo [2 ]
Kwon, Il-Bum [1 ]
机构：
[1] Korea Res Inst Stand & Sci, Ctr Safety Measurement, Daejeon 34113, South Korea
[2] Gwangju Inst Sci & Technol, Sch Elect Engn & Comp Sci, Gwangju 61005, South Korea
来源：
IEEE SENSORS JOURNAL | 2018年 / 18卷 / 05期
关键词：
Rayleigh backscattering; Ge-doped-core photonic crystal fiber; low bending loss; strain; and temperature; PHOTONIC CRYSTAL FIBER; SINGLE-MODE FIBER; FREQUENCY-DOMAIN REFLECTOMETRY; OPTICAL-FIBER; TEMPERATURE-MEASUREMENTS; PRESSURE; DESIGN;
D O I：
10.1109/JSEN.2017.2788017
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：
We propose a bend-loss free, high-resolution, fiber-optic distributed sensor by using a new sensing fiber namely Ge-doped-core photonic crystal fiber (PCF) in optical frequency domain reflectometer (OFDR). PCF is fabricated with high concentration of Ge-doping in the small core leading to large refractive index difference between core and air-silica cladding. We achieved negligible macrobending loss in our Ge-dopedcore PCF for a bend radius of curvature down to 1 mm in experiment and the results are validated by numerical simulation. By using OFDR, with a bend radius of 1 mm, the strain and temperature sensitivities in Ge-doped-core PCF are measured to be 0.138 GHz/mu epsilon and 1.46 GHz/degrees C, respectively, with 5 cm spatial resolution.
引用
收藏
页码：1903 / 1910
页数：8
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