Realizing Waveguide-Grating Network Codecs to Recursively Suppress Optical Interference Noises

Abstract

In this paper, we propose a recursive interference cancellation (RIC) scheme over optical coding access network coder/decoders (codecs). The novel-designed interference noises canceller is structured over arrayed-waveguide gratings (AWGs). By recursively following the recoding, subtraction, and decoding processes, the reconfigured AWG codecs will largely suppress optical interference noises to successfully recover target user data bits. Numerical evaluations are taken to illustrate the RIC processes to compare different recursive rounds and code weights distribution to the SNR performance of target data bit decoding.