Optimization Algorithm Applied to the Design of Few-Mode Erbium Doped Fiber Amplifier for Modal and Spectral Gain Equalization

Author

Le Cocq, G. ; Quiquempois, Y. ; Bigot, L.

Author_Institution

Lab. de Phys. des Lasers, Atomes et Mol., Univ. Lille 1, Villeneuve d´Ascq, France

Volume

33

Issue

1

fYear

2015

fDate

Jan.1, 1 2015

Firstpage

100

Lastpage

108

Abstract

Gradient descent optimization algorithm is applied to design few-mode Er³⁺-doped fibers adapted to gain equalization over modes and wavelengths, for mode division multiplexing. Theoretical study is performed for fiber designs supporting six and ten spatial modes at signal wavelength. Flat gain is obtained by optimizing Er³⁺ doping profile of a micro-structured core and modal composition of the pump beam.

Keywords

erbium; gradient methods; laser beams; optical communication equipment; optical fibre amplifiers; optical pumping; Er³⁺ doping profile; few-mode Er³⁺-doped fiber; few-mode erbium doped fiber amplifier design; fiber designs; flat gain; gradient descent optimization algorithm; microstructured core; modal composition; modal equalization; mode division multiplexing; pump beam; signal wavelength; spatial modes; spectral gain equalization; Convergence; Erbium; Insertion loss; Laser excitation; Multiplexing; Optimization; Silicon compounds; Erbium-doped fiber; Erbium-doped fiber amplifiers (EDFA); Multiplexing, Gradient methods; amplifiers; gradient methods; multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2360774

Filename

6912926