Tunable dual-wavelength bismuth fiber laser with 37.8-GHz frequency spacing
Document Type
Article
Publication Date
10-15-2021
Abstract
A tunable dual-wavelength Brillouin-bismuth fiber laser with a triple-Brillouin frequency spacing of similar to 37.8 GHz was demonstrated by employing modular structures. The modular designs can be divided into two main cavities, whereby cavity 1 consisted of a 2-km single-mode fiber (SMF) and a loop mirror that was able to generate a single-spaced Brillouin shift, while cavity 2 comprised of 10-km dispersion compensating fiber (DCF) that was able to produce a double-spaced Brillouin shift. Based on this design, a stable dual-wavelength lasing was established with a low peak power fluctuation of 0.13 dB and 0.6 dB for the Brillouin pump (BP) and third Brillouin Stokes line (BS3), respectively. By varying the center wavelength of the Brillouin pump, the dual-wavelength laser can be tuned across a 40 nm span, ranging from 1300 nm to 1340 nm. The frequency spacing of the Brillouin-bismuth fiber laser can also be easily switched between similar to 12.6 GHz, similar to 25.2 GHz, and similar to 37.8 GHz by utilizing these modular structures. The proposed dual-wavelength laser has a promising potential for application as a low phase noise source for microwave generation.
Keywords
Scattering, Fiber lasers, Optical fiber dispersion, Optical fiber polarization, Pump lasers, Optical fiber amplifiers, Quantum cascade lasers, Bismuth-doped fiber laser, double-Brillouin frequency spacing, Dual-wavelength, single-Brillouin frequency spacing, stimulated Brillouin scattering, triple-Brillouin frequency spacing
Divisions
PHYSICS,photonics
Funders
Universiti Malaya (RK 021-2019),Universiti Malaya (TOP100PRC),Universiti Malaya (RU002-2020),Ministry of Higher Education Malaysia, HICOE Phase II (PRC-2014)
Publication Title
Journal of Lightwave Technology
Volume
39
Issue
20
Publisher
Institute of Electrical and Electronics Engineers
Publisher Location
445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA