光码分多址系统中,光编解码器是影响系统性能的关键因素之一.自相关峰值旁瓣比(P/W)、自互相关峰值比(P/C)是衡量编解码器性能的两个重要指标.以硅基SOI微环谐振腔为载体,提出了一种串联三环阵列的二维相干OCDMA编解码器模型.详细研究了耦合系数、损耗系数、阵列间距以及通道间隔对微环谐振腔编解码器性能的影响.结果表明,半径为50μm的微环,环与直波导间耦合系数在0.6—0.7之间,环与环间耦合系数在0.1—0.2之间,损耗系数<2 d B/cm,阵列间距大于3 mm,通道间隔在25—36 GHz间时,编解码器能够获得良好的性能. Optical code division multiple access system, the optical codec is one of the key factors that affect the system performance.The auto-correlation peak side-lobe ratio (P / W), self-correlation peak ratio (P / C) is a measure of codec performance Based on the silicon-based SOI micro-ring resonator as carrier, a two-dimensional coherent OCDMA codec model of tandem three-ring array is proposed.Coupling coefficients, loss coefficients, array spacing and channel spacing pairs The results show that the coupling coefficient between the ring and the waveguide is 0.6-0.7, the coupling coefficient between the ring and the ring is between 0.1-0.2, the loss coefficient <2 d B / cm, with array spacings greater than 3 mm and code spacing between 25-36 GHz, the codec is able to achieve good performance.