Mode Division Multiplexed Transmission over Elliptical Core Few Mode Fiber with Non-Degenerate LP11 Modes Using Mode Selective Coupler Based Multiplexers

Mode division multiplexed transmission is demonstrated over 500 m elliptical core few-mode fiber using multiplexer and de-multiplexer made from mode selective couplers with non-degenerate $\mathrm{L}\mathrm{P}_{11\mathrm{a}}$ and $\mathrm{L}\mathrm{P}_{11\mathrm{b}}$ modes at 25Gb/s over two of the channels.