We propose a novel digital signal processing (DSP) technique that encrypts multiple baseband signals by dividing them into several spectral slices, which are then shuffled. Afterwards, the shuffled signals modulate optical carriers and are propagated through transparent optical communication systems. Simulation results reveal that the reach of shuffled signals is ~ 90% of that of unshuffled ones. We also evaluate a scenario where the shuffled signals are transmitted through multiple routes to increase security and investigate the robustness of the technique against brute force and chosen plaintext attacks.

中文翻译：

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基于DSP的多通道频谱混洗应用于光网络

我们提出了一种新颖的数字信号处理 (DSP) 技术，该技术通过将多个基带信号划分为多个频谱切片，然后对其进行混洗来对它们进行加密。之后，混洗后的信号调制光载波并通过透明光通信系统传播。仿真结果表明，混洗信号的覆盖范围约为未混洗信号的 90%。我们还评估了一个场景，其中混洗信号通过多条路线传输以提高安全性，并研究该技术对抗蛮力和选择明文攻击的鲁棒性。