论文部分内容阅读
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-20dB、初始攻击信号功率高于用户信号功率20dB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-20dB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。
The in-band crosstalk attacks caused by high-power signals in optical networks are analyzed. The power of attack signals and the optical-ON-optical crosstalk coefficients are the main factors that affect the signal quality of the users. The experiment system is set up in VPI simulation software, and the bit error rate is used as evaluation index to quantitatively study the influence of in-band crosstalk attack on user signal quality and its attack propagation ability. The results show that when the optical crosstalk coefficient is -20 dB and the initial attack signal power is higher than the user signal power by more than 20 dB, the user signals passing through the first and second optical switches at OXC1 will be attacked. After the third User signals of the optical switch are hardly affected by the attack. In-band crosstalk attack has a certain attack propagation capability. When the initial attack signal power is higher than the user signal power of 27 dB and the optical open-beam crosstalk coefficient is -20 dB, the attack capability of the initial attack signal can propagate to OXC3. At the same time, the second-order attack signal Do not have the ability to spread attacks.