Abstract

We propose a silicon microring modulator based two-circular quadrature amplitude modulation (16QAM). We have numerically analyzed the error performance using Voronoi diagram and compared it with the simulation results under back-to-back condition using optical band-pass filter (OBPF) before the receiver having 3-dB bandwidth of 30%, 40%, and 50% of symbol rate, respectively. The result shows 1 dB difference between each case of OBPF bandwidth and 0.5 dB difference between theoretical and simulated value.

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