Tunable dual-wavelength bismuth fiber laser with 37.8-GHz frequency spacing

Ahmad, Harith and Aidit, Siti N. and Samion, Muhamad Zharif and Wang, Siyi and Wang, Yu and Sahu, Jayanta K. (2021) Tunable dual-wavelength bismuth fiber laser with 37.8-GHz frequency spacing. Journal of Lightwave Technology, 39 (20). pp. 6617-6623. ISSN 0733-8724, DOI https://doi.org/10.1109/JLT.2021.3100987.

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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.

Item Type: Article
Funders: Universiti Malaya (RK 021-2019), Universiti Malaya (TOP100PRC), Universiti Malaya (RU002-2020), Ministry of Higher Education Malaysia, HICOE Phase II (PRC-2014)
Uncontrolled 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
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Department of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 11 Aug 2022 06:38
Last Modified: 11 Aug 2022 06:38
URI: http://eprints.um.edu.my/id/eprint/28473

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