Spot-Based Mode Coupler for Mode-Multiplexed Transmission in Few-Mode Fiber
09 July 2012
We present designs for a low-loss mode coupler based on multiple Gaussian spots that can selectively address spatial and polarization modes of a few-mode fiber. In particular we show a design optimized for a few-mode fiber with 12 spatial and polarization modes (LP01 , the twofold degenerate LP11 and LP21 , and LP02 ), with a mode dependent loss
