Reflective Optical Fiber Refractometer Based on Long-Period Grating Tailored Active Bragg Grating

被引：7
|
作者：
Zhang, Yebin [1 ]
Yan, Guofeng [1 ]
Zhou, Bin [2 ]
Lee, El-Hang [1 ]
He, Sailing [1 ,3 ]
机构：
[1] Zhejiang Univ, Dept Opt Engn, Ctr Opt & Electromagnet Res, Hangzhou 310027, Peoples R China
[2] S China Normal Univ, South China Acad Adv Optoelect, Guangzhou 510631, Guangdong, Peoples R China
[3] Royal Inst Technol, Alfven Lab, Div Electromagnet Theory, S-11428 Stockholm, Sweden
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Reflective optical fiber refractometer; active Bragg grating; long-period grating; REFRACTIVE-INDEX; TILTED FIBER; SENSOR; INTERFEROMETER;
D O I：
10.1109/LPT.2015.2414351
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 reflective optical fiber refractometer based on a long-period grating (LPG) followed by an active fiber Bragg grating (AFBG) is proposed. The AFBG is inscribed in a short section of cobalt-doped optical fiber, which can be heated by pump laser and acts as a sensing signal indicator. The LPG functions as a bridge between the surrounding refractive index (RI) and the AFBG reflection, tailoring the power of pump laser for heating. Experimental results demonstrate that the wavelength response of this fiber grating-based reflective refractometer can be easily adjusted, and a significantly improved sensitivity within the RI range from 1.3403 to 1.4654 has been achieved.
引用
收藏
页码：1173 / 1176
页数：4
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