Abstract
In order to achieve the best gain profile for multi pump distributed Raman amplifiers in Wavelength Division Multiplexing (WDM) transmission systems, the power and wavelength of pumps, the type of pumping configuration and the number of pump signals are the most important factors. In this paper, using a Multi-Objective Imperialist Competition Optimization Algorithm (MOICA) with lowest power consumption and lowest number of pumps, we propose the most uniform gain profile for two types of pumping configurations in S- band and compare the results. Considering the design conditions including the type of pumping configuration, fiber length, fiber type and number of pump signals and using the multi-objective algorithm, we propose a method which can be used to achieve a gain level in which the amplifier has the lowest power consumption and lowest gain ripple. According to this, we can design a powerful WDM transmission system by Distributed Raman Amplifier (DRA) with a good performance and efficiency.
Highlights
Distributed Raman fiber amplifier is a powerful and hopeful technology for telecommunication systems with high capacity and long path line
Raman amplification is based on stimulated Raman scattering (SRS), which is a non-linear effect in signal transmission through optical fiber
In this paper a multi-objective imperialist competition optimization algorithm is used to have a uniform gain profile with lowest gain ripple and minimum consumption power of pumps .the results are compared with other optimization algorithms that are used in other works in this field
Summary
Distributed Raman fiber amplifier is a powerful and hopeful technology for telecommunication systems with high capacity and long path line It uses the transmission line as a medium to create the Raman gain. The structure of a forward pump and seven backward pumps are used in implementing the optimization algorithm to emerge the effect of pump configuration Various methods, such as Genetic Algorithm (GA), multi-population genetic algorithm and firefly algorithm are employed to optimize the performance of distributed Raman fiber amplifier [5]. In this paper a multi-objective imperialist competition optimization algorithm is used to have a uniform gain profile with lowest gain ripple and minimum consumption power of pumps .the results are compared with other optimization algorithms that are used in other works in this field.
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