Tunable spacing dual-wavelength Q-switched fiber laser based on tunable FBG device
Document Type
Article
Publication Date
12-1-2021
Abstract
A tunable spacing dual-wavelength Q-switched fiber laser is experimentally demonstrated based on a fiber Bragg grating tunable device incorporated in an erbium-doped fiber laser (EDFL). The system utilizes two identical fiber Bragg gratings (FBGs) at 1547.1 nm origin to enable two laser lines operation. The wavelength separations between two laser lines are controlled by fixing one of the FBGs while applying mechanical stretch and compression to the other one, using a fiber Bragg grating tunable device. The seven steps of wavelength spacing could be tuned from 0.3344 to 0.0469 nm spacing. Pulse characteristics for both close and wide spacing of dual-wavelength Q-switched fiber laser are successfully being recorded. The findings demonstrate the latest idea of dual-wavelength fiber laser based on FBG tunable device, which offers a wide range of future applications.
Keywords
Q-switched fiber laser, Erbium-doped fiber laser, Dual-wavelength, Tunable spacing, Fiber Bragg gratings, Carbon nanotubes
Divisions
photonics
Funders
Fundamental Research Grant Scheme (FRGS)[FRGS/1/2018/STG02/UPM/02/1/5540123],Ministry of Education, Malaysia
Publication Title
Photonics
Volume
8
Issue
12
Publisher
MDPI
Publisher Location
ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND