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Brillouin-Raman fiber laser with switchable wavelength spacing based on Brillouin pump distribution


Citation

Al-Alimi, Abdulmoghni Ali Wazea and Cholan, Noran Azizan and Salam, Sameer and Mustapha Kamil, Yasmin and Mohamed Ahmed, Mahmoud Hazzaa and Mahdi, Mohd Adzir (2021) Brillouin-Raman fiber laser with switchable wavelength spacing based on Brillouin pump distribution. Results in Physics, 25. art. no. 104149. pp. 1-8. ISSN 2211-3797

Abstract

A switchable multi-wavelength Brillouin-Raman fiber laser (MW-BRFL) is presented in this work. The MW-BRFL consists of a full-open linear cavity in which dispersion compensating fiber is employed as the gain medium for Brillouin and Raman amplification. The switching operation for single- and double-wavelength spacing MW-BRFL can be implemented by controlling Brillouin pump (BP) power distribution and direction that enters the laser cavity via two fiber-entry points. This is achievable by optimizing the splitting ratio of an optical coupler and the initial BP power. For the proposed laser setup, a 30/70 optical coupler was found to be the optimum. By setting the initial BP power at −3.0 dBm, 246 laser lines with 20-GHz frequency spacing were observed. The transformation to 10-GHz frequency spacing was attained by increasing the BP power to 11.8 dBm that resulted in 483 laser lines. All the counted laser lines had 3 dB peak power variation and were spread across a 38 nm bandwidth. In a nutshell, the proposed MW-BRFL is promising with respect to its performance, simplicity and flexibility.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Putra Science Park
DOI Number: https://doi.org/10.1016/j.rinp.2021.104149
Publisher: Elsevier
Keywords: Switchable fiber laser; Brillouin scattering; Raman scattering; Multi-wavelength fiber laser
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 31 Jan 2023 02:55
Last Modified: 31 Jan 2023 02:55
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.rinp.2021.104149
URI: http://psasir.upm.edu.my/id/eprint/96264
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