Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser

被引：0
|
作者：
曾理 [1 ]
孙小燕 [1 ]
苌子坤 [1 ]
胡友旺 [1 ]
段吉安 [1 ]
机构：
[1] State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University
来源：
Chinese Optics Letters | 2021年 / 19卷 / 03期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
D O I：
暂无
中图分类号：
TN253 [光纤元件]; TN249 [激光的应用];
学科分类号：
0702 ; 070207 ; 0803 ; 080401 ; 080901 ;
摘要：
A phase-shifted fiber Bragg grating(PS-FBG) based on a microchannel was proposed and realized by combining the pointby-point scanning method with chemical etching. The PS-FBG is composed of a fiber Bragg grating(FBG) and a microchannel through the fiber core. The microchannel can introduce phase shift into the FBG. What is more important is that it exposes the fiber core to the external environment. The phase shift peak is sensitive to the liquid refractive index, and it shows a linear refractive index response wavelength and intensity sensitivity of 2.526 nm/RIU and-111 d B/RIU, respectively.Therefore, such gratings can be used as sensors or tunable filters.
引用
收藏
页码：45 / 49
页数：5
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