Narrow-Linewidth Tunable Fiber Laser Based on Laser-Induced Graphene Heated Fiber Bragg Grating with Low Voltage

被引：2
|
作者：
Gu, Baoshan [1 ]
Yang, Feng [1 ]
Shen, Li [1 ]
Zhou, Shouhuan [2 ]
Wang, Shutong [1 ]
Wang, Sha [1 ]
机构：
[1] Sichuan Univ, Coll Elect & Informat Engn, Chengdu 610064, Peoples R China
[2] North China Res Inst Electroopt, Beijing 100015, Peoples R China
来源：
PHOTONICS | 2023年 / 10卷 / 02期
基金：
中国国家自然科学基金;
关键词：
tunable narrow-linewidth laser; single-longitudinal mode; laser-induced graphene; low voltage tunable; fiber Bragg grating; RING LASER;
D O I：
10.3390/photonics10020136
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we demonstrate a narrow-linewidth tunable fiber laser based on laser-induced graphene (LIG) paper-heated fiber Bragg grating (FBG) with low voltage. A linewidth of less than 600 Hz is achieved by the combination of a piece of unpumped Er-doped fiber and an FBG. Changing the temperature of the FBG will result in the central transmission spectrum shifting, and hence the laser wavelength tuning. LIG-heated (LIG-H) fabrication on polyimide (PI) paper by CO2 laser is used to offer temperature control of the FBG. By adjusting the voltage of the LIG-H from 0 to 5 V, the temperature of the LIG-H can be changed from room temperature up to 220 degrees C, while the central wavelength of the output laser can be continuously adjusted from 1549.5 nm to 1552 nm with a full range of 2.5 nm. The proposed technique by electric control of LIG-H can provide a low-cost and compact wavelength tunable laser design.
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页数：8
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