Transparent optical networks (TONs) based on Wavelength Division Multiplexing (WDM) are the only viable future-proof solution for supporting rapidly growing traffic demands. In TONs, optical signals are propagated transparently between edge nodes without any O/E/O conversion. In this way, it is possible to reduce cost and energy consumption in the network, as well as obtain transparency to signal bit rates, modulation formats and protocols. However, the absence of O/E/O conversion makes it easier for erroneous signals to propagate through the network and affect existing traffic. This can be utilized to realize attacks exploiting the physical-layer characteristics of network elements. An example of such attacks is high-power jamming, where a high-powered signal is injected in the network aiming to deteriorate the signal quality on other, legitimate optical channels (referred to as lightpaths), as described in [1] and [2].
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机译：基于波分复用（WDM）的透明光网络（TON）是支持快速增长的流量需求的唯一可行的面向未来的解决方案。在TON中，光信号在边缘节点之间透明地传播，而无需任何O / E / O转换。这样，可以减少网络中的成本和能耗，并获得信号比特率，调制格式和协议的透明性。但是，由于没有O / E / O转换，因此错误信号更容易在网络中传播并影响现有流量。可以利用网络元素的物理层特性来实现攻击。这种攻击的一个例子是大功率干扰，如[1]和[2]所述，其中大功率信号注入网络，目的是降低其他合法光信道（称为光路）上的信号质量。 ]。
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