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OSNR variation of multiple laser lines in Brillouin-Raman fiber laser


Abdul Kadir, Muhammad Zamzuri and Mahdi, Mohd Adzir and Al-Mansoori, Mohammed Hayder and Md. Samsuri, Norhakimah and Ahmad, A. and Islam, M. S. (2009) OSNR variation of multiple laser lines in Brillouin-Raman fiber laser. Optics Express, 17 (19). pp. 16904-16910. ISSN 1094-4087


We report experimental results demonstrating the variation of optical signal-to-noise ratio (OSNR) of laser lines in Brillouin-Raman fiber laser against Raman pump power (RPP) variation. The reduction of OSNR is attributed to the spectral broadening of laser lines depending on the RPP. The spectral broadening is owing to the effect of the interaction between laser lines and turbulent waves (nonlinear interaction between longitudinal cavity modes).In our experiment, the worst OSNR is obtained at 650 mW RPP as a result of maximum spectral broadening when the Brillouin pump wavelength is fixed at 1555 nm. On the other hand, the OSNR improvement is obtained for RPP beyond 650 mW due to the effect of red-shift, the Raman peak gain is shifted away from the laser lines generated around 1555 nm thus reduces the spectral broadening effect.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1364/OE.17.016904
Publisher: Optical Society of America
Keywords: Lasers; Fiber; Stimulated Brillouin; Raman fiber lasers.
Depositing User: Fatimah Zahrah @ Aishah Amran
Date Deposited: 15 Oct 2014 04:04
Last Modified: 13 Nov 2015 02:51
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1364/OE.17.016904
URI: http://psasir.upm.edu.my/id/eprint/16011
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