Abstract

Space Division Multiplexing (SDM) is an emerging technology which could resolve the issue of capacity crunch [1]. In few mode fiber (FMF) scheme, orthogonal modes including degeneracy and polarization of fiber carry information data independently. The few mode erbium doped fiber amplifier (FM-EDFA) is key component for the development of FMF based SDM Optical communication system. We propose the trench-assisted annulus core EDFA which could provide more than 20 dB gain and less than 0.8 dB DMG for six mode groups.

© 2015 Japan Society of Applied Physics, Optical Society of America