Multi-wavelength Bismuth-doped fiber laser in 1.3 mu m based on a compact two-mode fiber filter
Document Type
Article
Publication Date
12-1-2021
Abstract
In this work, a multi-wavelength Bismuth-doped fiber laser (MWLBDFL) operating in the 1.3 mu m wavelength region is presented and experimentally demonstrated. The MWLBDFL leveraged on a 60 m Bismuth-doped fiber as an active gain medium, a compact two-mode fiber filter (TMFF) as a comb filter and a 2 km single-mode fiber section to induce four-wave mixing in the system. By optimising the polarization controller, the MWLBDFL generated 18 stable lasing output channels within 10 dB from the highest lasing line and a reasonably flat spectrum over a range of 11 nm. The stability of the MWLBDFL tested for a 150-minute duration showed a peak power fluctuation of less than 1 dB with a negligible wavelength drift. The extinction ratio of the TMFF was approximately 8.6 dB while the highest and lowest optical-signal-to-noise ratios (OSNRs) of the MWLBDFL were similar to 55 dB and similar to 50 dB, respectively. To the best of the author's knowledge, the proposed MWLBDFL demonstrates the highest number of output channels compared to other MWLs operating in the same wavelength region.
Keywords
Bismuth-doped fiber laser, Multi-wavelength laser, Two-mode fiber filter, 1.3 mu m, Energy conversion
Divisions
photonics
Funders
Universiti Malaya[RK021-2019],Universiti Malaya[TOP100PRC],Universiti Malaya[RU002-2020],Ministry of Education, Malaysia[PRC-2014]
Publication Title
Optics and Laser Technology
Volume
144
Publisher
Elsevier Sci Ltd
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND