Rigorous and optimized few-mode erbium-doped fiber amplifier design by using topology optimization and genetic algorithms

Adolfo F. Herbster; Murilo A. Romero

doi:10.1117/1.OE.56.4.046102

7 April 2017 Rigorous and optimized few-mode erbium-doped fiber amplifier design by using topology optimization and genetic algorithms

Adolfo F. Herbster, Murilo A. Romero

Author Affiliations +

Optical Engineering, Vol. 56, Issue 4, 046102 (April 2017). https://doi.org/10.1117/1.OE.56.4.046102

Abstract

We develop a rigorous procedure for the optimum design of few-mode erbium (Er)-doped fiber amplifiers, which is tackled as a multiobjective optimization problem, in an approach based on the combination of the topology optimization and genetic algorithm techniques. We demonstrated that the usual ring-like doping distributions are necessarily the best choices only if the pump intensity shows no azimuthal dependence. Additionally, in general, the optimum doping distribution will be a function of the signal and pump azimuthal mode numbers. For the particular case of the LP11 pump, we also provide a triple-ring Er-doping profile that maximizes modal equalization for seven-group modes over the whole C-band, the highest modal count proposed in the literature so far.

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Adolfo F. Herbster and Murilo A. Romero "Rigorous and optimized few-mode erbium-doped fiber amplifier design by using topology optimization and genetic algorithms," Optical Engineering 56(4), 046102 (7 April 2017). https://doi.org/10.1117/1.OE.56.4.046102

Received: 16 November 2016; Accepted: 20 March 2017; Published: 7 April 2017

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