Multimode demultiplexer for space division multiplexing by using nano-pixel

Multimode demultiplexer is proposed by using nano-pixel configuration in a square of 3.0 × 3.0 μm$^{2}$. The simulated results demonstrate mode XT of 13.6 dB and 11.4 dB for 0$^{th}$ and 1$^{st}$ order modes, respectively.