Signal buffering services such as contention resolution and congestion avoidance are essential in optical packet switching networks. In this paper, an optical memory scheme based on spectral amplitude coding (SAC) and complementary code keying (CCK) is proposed to increase the buffer capacity. CCK is applied to packet buffering by selecting an available code set and encoding the payload bits with either an SAC signal or its complementarity. The capacity constraint is effectively released, as the usable codes for queuing packets are twice those for the conventional code-domain buffers. To minimize system costs by reducing the codec number, a shared structure based on an arrayed waveguide grating (AWG), which is capable of processing both the typical and complimentary coded signals simultaneously, is also investigated.

中文翻译：

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容量增加的光缓冲中频谱幅度编码信号的免费编码键控

诸如争用解决和拥塞避免之类的信号缓冲服务在光分组交换网络中至关重要。本文提出了一种基于频谱幅度编码（SAC）和互补码键控（CCK）的光学存储方案，以增加缓冲容量。通过选择可用的代码集并使用SAC信号或其互补性对有效载荷位进行编码，CCK可应用于数据包缓冲。容量约束得到有效释放，因为用于排队数据包的可用代码是常规代码域缓冲区的可用代码的两倍。为了通过减少编解码器数量来最大程度地降低系统成本，还研究了一种基于阵列波导光栅（AWG）的共享结构，该结构能够同时处理典型和互补编码信号。