Fabrication and characterization of helical long-period fiber gratings in single-mode fibers

被引：11
|
作者：
Wang, Xingpeng [1 ]
Wang, Dongdong [1 ]
Wang, Qi [1 ]
Xian, Lunlun [1 ]
Li, Li [1 ,2 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China
[2] Nanjing Univ Sci & Technol, Adv Launching Cooperat & Innovat Ctr, Nanjing 210094, Jiangsu, Peoples R China
来源：
OPTIK | 2018年 / 158卷
基金：
中国国家自然科学基金;
关键词：
Long-period grating; Helical; Single-mode fiber; PHOTONIC-CRYSTAL-FIBER; TWIST SENSOR; TORSION SENSOR; SAGNAC INTERFEROMETER; SENSITIVITY; CO2-LASER;
D O I：
10.1016/j.ijleo.2017.12.006
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fabrication method for helical long-period gratings (H-LPGs) in single-mode fibers is experimentally demonstrated. H-LPGs are manufactured by homogenously twisting the melting parts of fibers under indirect CO2 laser beam irradiation. The resonant wavelength attenuation is controlled by monitoring the real-time transmission spectrum during heating and twisting processes. The torsional and thermal characteristics of the fabricated H-LPGs are systematically investigated in experiments. The achieved torsion sensitivity is 96.4 pm/(rad/m) for twisting angles from -240 degrees to 240 degrees, and the temperature sensitivity is 49.2 pm/degrees ranging from 20 degrees to 120 degrees Our experimental results exhibit a highly accurate and reliable fabrication method for H-LPGs in fibers that possess high potentials for torsion and temperature sensing applications. (C) 2017 Elsevier GmbH. All rights reserved.
引用
收藏
页码：28 / 32
页数：5
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