中文摘要：

分析了光网络中大功率信号引起的带内串扰攻击,攻击信号功率和光开光串扰系数是带内串扰攻击对用户信号质量产生破坏影响的主要因素.在VPI仿真软件中搭建实验系统,以误码率为评价指标,定量研究了带内串扰攻击对用户信号质量的影响及其攻击传播能力.结果表明,当光开关串扰系数为-20 dB、初始攻击信号功率高于用户信号功率20 dB以上时,在OXC1处,经过第一级和第二级光开关的用户信号会受到攻击影响,经过第三级光开关的用户信号几乎不受攻击影响.带内串扰攻击具有一定的攻击传播能力,当初始攻击信号功率高于用户信号功率27dB、光开光串扰系数为-20 dB时,初始攻击信号的攻击能力可传播至OXC3,同时,二阶攻击信号基本不具备攻击传播能力.

英文摘要：

The intra-channel crosstalk attack in optical networks caused by high power signals was analyzed, and it is indicated that the power of attack signal and crosstalk coefficient of the optical switch are the main factors for the destructive effect of intra-channel crosstalk attack on the quality of legitimate signals. Effects of intra-channel crosstalk attack on the quality of legitimate signals and its capability of attack propagation were investigated quantitatively by building simulation system in VPI software. The results show that the legitimate signals through the first and the second stage optical switches are affected and the legitimate signal through the third stage optical switch is almost unaffected by attack when the crosstalk coefficient of the optical switch is --20 dB and the power of original attack signal is above 20 dB more than that of legitimate signals at OXC1. The intra-channel crosstalk attack has a certain capability of attack propagation. The attack capability of the original signal can be propagated to OXC3 when the crosstalk coefficient of the optical switch is -20 dB and the power of OAS is 27 dB higher than that of legitimate signals. And it is also find that the secondary attack signal does not have capability of attack propagation.