Particle swarm optimization on threshold exponential gain of stimulated Brillouin scattering in single mode fibers.
Al-Asadi, H. A. and Al-Mansoori, M. H. and Hitam, Salasiah and Saripan, M. Iqbal and Mahdi, Mohd Adzir (2011) Particle swarm optimization on threshold exponential gain of stimulated Brillouin scattering in single mode fibers. Optics Express, 19 (3 ). pp. 1842-1853. ISSN 1094-4087; ESSN:1094-4087
Official URL: http://www.osa.org/
We implement a particle swarm optimization (PSO) algorithm to characterize stimulated Brillouin scattering phenomena in optical fibers. The explicit and strong dependence of the threshold exponential gain on the numerical aperture, the pump laser wavelength and the optical loss coefficient are presented. The proposed PSO model is also evaluated with the localized, nonfluctuating source model and the distributed (non-localized) fluctuating source model. Using our model, for fiber lengths from 1 km to 29 km, the calculated threshold exponential gain of stimulated Brillouin scattering is gradually decreased from 17.4 to 14.6 respectively. The theoretical results of Brillouin threshold power predicted by the proposed PSO model show a good agreement with the experimental results for different fiber lengths from 1 km to 12 km.
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