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Photonics
Volume 10
Issue 2
10.3390/photonics10020136
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Communication

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

by
Baoshan Gu
1,
Feng Yang
1,
Li Shen
1,
Shouhuan Zhou
2,
Shutong Wang
1,* and
Sha Wang
1,*
1
College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
2
North China Research Institute of Electro-Optics, Beijing 100015, China
*
Authors to whom correspondence should be addressed.
Photonics 2023, 10(2), 136; https://doi.org/10.3390/photonics10020136
Submission received: 22 December 2022 / Revised: 19 January 2023 / Accepted: 24 January 2023 / Published: 29 January 2023
(This article belongs to the Special Issue Single Frequency Fiber Lasers and Their Applications)
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Abstract

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 °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.
Keywords: tunable narrow-linewidth laser; single-longitudinal mode; laser-induced graphene; low voltage tunable; fiber Bragg grating tunable narrow-linewidth laser; single-longitudinal mode; laser-induced graphene; low voltage tunable; fiber Bragg grating

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MDPI and ACS Style

Gu, B.; Yang, F.; Shen, L.; Zhou, S.; Wang, S.; Wang, S. Narrow-Linewidth Tunable Fiber Laser Based on Laser-Induced Graphene Heated Fiber Bragg Grating with Low Voltage. Photonics 2023, 10, 136. https://doi.org/10.3390/photonics10020136

AMA Style

Gu B, Yang F, Shen L, Zhou S, Wang S, Wang S. Narrow-Linewidth Tunable Fiber Laser Based on Laser-Induced Graphene Heated Fiber Bragg Grating with Low Voltage. Photonics. 2023; 10(2):136. https://doi.org/10.3390/photonics10020136

Chicago/Turabian Style

Gu, Baoshan, Feng Yang, Li Shen, Shouhuan Zhou, Shutong Wang, and Sha Wang. 2023. "Narrow-Linewidth Tunable Fiber Laser Based on Laser-Induced Graphene Heated Fiber Bragg Grating with Low Voltage" Photonics 10, no. 2: 136. https://doi.org/10.3390/photonics10020136

APA Style

Gu, B., Yang, F., Shen, L., Zhou, S., Wang, S., & Wang, S. (2023). Narrow-Linewidth Tunable Fiber Laser Based on Laser-Induced Graphene Heated Fiber Bragg Grating with Low Voltage. Photonics, 10(2), 136. https://doi.org/10.3390/photonics10020136

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