- Modeling and characterization of a few-mode EDFA supporting four mode groups for mode division multiplexing.
Modeling and characterization of a few-mode EDFA supporting four mode groups for mode division multiplexing.
Optics express (2012-11-29)
Guillaume Le Cocq, Laurent Bigot, Antoine Le Rouge, Marianne Bigot-Astruc, Pierre Sillard, Clemens Koebele, Massimilliano Salsi, Yves Quiquempois
PMID23187561
ABSTRACT
Numerical and experimental study of a Few-Mode (FM) Erbium Doped Fiber Amplifier (EDFA) suitable for mode division multiplexing (MDM) is reported. Based on numerical simulations, a Few-Mode Erbium Doped Fiber (FM-EDF) has been designed to amplify four mode groups and to equally amplify LP11 and LP21 mode groups with gains greater than 20 dB and with a differential modal gain of less than 1 dB. Experimental results confirmed the simulations with a good concordance. This modal gain equalization is obtained by tailoring the erbium spatial distribution in the fiber core with a ring-shaped profile.
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