Optical buffering is one of the essential functions in optical packet switching (OPS) network. This letter employs optical code-division multiple-access (OCDMA) signals of spectral-amplitude-coding (SAC) in a packet-buffering architecture. In the proposed scheme, the original OCDMA label of the incoming packet is identified and converted to a new label by a code-switching system. As multiple packets overlap in the time domain in a single device, SAC is adopted for packet encoding to avoid multiple access interference (MAI). The concepts of queuing system and Gaussian approximation are employed to model the buffer architecture. Simulations were conducted to demonstrate the tradeoff between packet dropping probability and the signal variations in the label identification process. The buffering performance in terms of bit-error rate (BER) is examined. The results show SAC labels perform well on packet buffering.

中文翻译：

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频谱幅度编码标签在光分组交换网络光信号缓冲中的应用

光缓冲是光分组交换 (OPS) 网络中的基本功能之一。这封信在数据包缓冲架构中采用了光谱幅度编码 (SAC) 的光码分多址 (OCDMA) 信号。在所提出的方案中，传入数据包的原始 OCDMA 标签被识别并通过代码交换系统转换为新标签。由于单个设备中多个数据包在时域上有重叠，因此采用SAC进行数据包编码以避免多址干扰（MAI）。采用排队系统和高斯近似的概念来对缓冲区架构进行建模。进行了模拟以证明丢包概率和标签识别过程中的信号变化之间的权衡。检查在误码率 (BER) 方面的缓冲性能。