Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Adolfo F. Herbster

Federal University of Campina Grande, Electrical Engineering Department, Campina Grande, Brazil

Murilo A. Romero

University of São Paulo, Escola de Engenharia de São Carlos–Universidade de São Paulo, Electrical and Computer Engineering Department, São Carlos, Brazil

Opt. Eng. 56(4), 046102 (Apr 07, 2017). doi:10.1117/1.OE.56.4.046102
History: Received November 16, 2016; Accepted March 20, 2017
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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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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Adolfo F. Herbster and Murilo A. Romero
"Rigorous and optimized few-mode erbium-doped fiber amplifier design by using topology optimization and genetic algorithms", Opt. Eng. 56(4), 046102 (Apr 07, 2017). ; http://dx.doi.org/10.1117/1.OE.56.4.046102


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