Five-Wavelength-Switchable Single-Longitudinal-Mode Thulium-Doped Fiber Laser Based on a Passive Cascaded Triple-Ring Cavity Filter

Dan Cheng; Fengping Yan; Ting Feng; Wenguo Han; Luna Zhang; Qi Qin; Ting Li; Zhuoya Bai; Dandan Yang; Ying Guo; Wei Wang

doi:10.1109/JPHOT.2021.3128165

IEEE Photonics Journal (Jan 2022)

Five-Wavelength-Switchable Single-Longitudinal-Mode Thulium-Doped Fiber Laser Based on a Passive Cascaded Triple-Ring Cavity Filter

Dan Cheng,
Fengping Yan,
Ting Feng,
Wenguo Han,
Luna Zhang,
Qi Qin,
Ting Li,
Zhuoya Bai,
Dandan Yang,
Ying Guo,
Wei Wang

Affiliations

Dan Cheng: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Fengping Yan: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Ting Feng: ORCiD; Photonics Information Innovation Center, Hebei Provincial Center for Optical Sensing Innovations, College of Physics Science & Technology, Hebei University, Baoding, China
Wenguo Han: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Luna Zhang: Key Lab of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Qi Qin: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Ting Li: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Zhuoya Bai: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Dandan Yang: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Ying Guo: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China
Wei Wang: ORCiD; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China

DOI: https://doi.org/10.1109/JPHOT.2021.3128165
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 8

Abstract

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A five-wavelength-switchable thulium-doped fiber laser with a fiber Bragg grating (FBG)-based five-channel transmitting Fabry-Pérot (F-P) filter and a multi-coupler based triple-ring cavity (CTRC) filter, is experimentally proposed. For the first time, a multi-channel F-P filter and specially-designed coupler-based compound cavity filter were combined to realize multi-wavelength-switchable operation, with single-longitudinal-mode (SLM) lasing for each wavelength channel in a 2 µm band fiber laser. The theoretical analysis of the CTRC filter and the principle for achieving SLM operation by corporately using the F-P filter and CTRC filter were presented in detail. The experimental results demonstrated the good performance of the proposed filters. Five lasing wavelengths (1941.13 nm, 1941.22 nm, 1941.30 nm, 1941.39 nm, and 1941.47 nm) were obtained with good switchability, and each operated in a stable SLM state. The OSNR of each lasing wavelength was higher than 50 dB, and the linewidths of all obtained wavelengths were less than 8 kHz.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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