基于半导体光放大器的开关矩阵级联规模的研究

The cascadability of semiconductor optical amplifier based optical space switches

分析了几种基于半导体光放大器的开光矩阵的级联特性 ,结果表明矩阵 -矢量 ( matrix-vactor)开关规模的大小严重受限于大的分光损失 ,波导损失和耦合损失 .然而对于分布增益矩阵 -矢量开关矩阵和 Benes开关矩阵 ,放大自发辐射噪声 ( ASE)的积累和信号的非理想消光比是限制系统级联规模的主要因素 .当信号光功率较大时 ,非理想消光比对级联的规模有大的影响。

The cascadability of Semiconductor optical amplifier (SOA) gates and the size limitations for several kinds of switch architectures based on SOA's are studied theoretically. The analysis shows that the sizes of matrix-vector switches are severely limited owing to the splitting losses, waveguide losses and coupling losses. However for distributed gain matrix-vector switch and Benes switch, the accumulation of amplified spontaneous emission (ASE) noise and non-ideal extinction ratio also greatly influence the maximal sizes of switches. The extinction ratio can greatly influence the cascade number of SOA's at high input power.