On the Optimization of Raman Fiber Amplifier using Genetic Algorithm in the Scenario of a 64 nm 320 Channels Dense Wavelength Division Multiplexed System

Abstract

For multi parameter optimization of Raman Fiber Amplifier (RFA), a simple genetic algorithm is presented in the scenario of a 320 channel Dense Wavelength Division Multiplexed (DWDM) system at channel spacing of 25 GHz. The large average gain (> 22 dB) is observed from optimized RFA with the optimized parameters, such as 39.6 km of Raman length with counter-propagating pumps tuned to 205.5 THz and 211.9 THz at pump powers of 234.3 mW, 677.1 mW respectively. The gain flattening filter (GFF) has also been optimized to further reduce the gain ripple across the frequency range from 190 to 197.975 THz for broadband amplification.

Optimizing the Net Gain of a Raman-EDFA Hybrid Optical Amplifier using a Genetic Algorithm

“…It was observed that the Raman-EDFA HOA is the best combination, but in this investigation optimization of HOA was not performed. In this paper we extend the previous results of [8][9][10][11][12] by designing a net-gain mathematical model and optimizing the Raman-EDFA HOA using a genetic algorithm. This paper is organized as follows.…”

“…5 the variation of bit error rate among the DWDM channels is detected due to crosstalk between those channels having the different data symbols. Even so, the proposed system provides an acceptable bit error rate <1×10 −9 [10] over the effective bandwidth.…”

“…A GA allows a population composed of many individuals to evolve to a state that maximizes "fitness" under specified selection rules. The details and implementation of GA can be found in [10].…”

“…only one parameter of the HOA is varied at a time. In the previous research papers [9][10][11], various global optimization techniques (such as genetic algorithm, hybrid genetic algorithm, neural network learning) were presented to optimize a Raman or EDFA amplifier only. Until now no global optimization technique has been applied to optimize the Raman-EDFA HOA in an optical comOptimizing the Net Gain of a Raman-EDFA Hybrid Optical … -Simranjit Singh and Rajinder Singh Kaler 443 munication system.…”

Performance Analysis of Flat Gain Wideband Raman Amplifier for S+C and C+L Band DWDM System

“…We already reported the performance of hybrid amplifier Raman +EDFA in DWDM system using RZ and NRZ format [7]. Gain flattening filter optimization has been proposed in 320 channels' broadband DWDM system at reduced channel spacing is about 25 GHZ to achieve gain ripple less than 0.5 Db [8]. Optimization tools greatly reduce the design time for required work and fiber Raman amplifier pumped at multiwavelength and frequency reported [9].…”