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文章主要研究了网络中心与其它节点之间由两条光纤构成双向传输链路的情况 ,给出了均匀和随机两种业务条件下网络中所需波长数的理论下限范围 ,利用图着色理论构造启发式算法解决了星形网络中的波长分配问题 ,最后通过实际波长分配验证了算法的有效性

文章提出了一种考虑光纤色散的受激拉曼散射（SRS）效应的分析模型,它计算简便,且物理意义明确。依据该模型,分析计算了波分复用（WDM）系统的输出平均功率和SRS串话损害系数,以及由于SRS引起的输出功率波动的标准差,分析了色散走离可以降低SRS引起的输出功率波动,并对此进行了计算。

偏振度（DOP）是描述光速性能的一个物理量,其测量具有重要意义。文章详细分析了偏振仪法、偏振扰码法和极值搜索法测试DOP的原理、实现方法及其优缺点,对DOP的不同计算方法进行了讨论,提出了适用于偏振模色散（PMD）补偿的高精度、快速的DOP测试方案。

偏振控制器在相干光纤通信、高速光纤通信以及光纤传感等领域具有十分重要的作用,由于要求它具有高的控制精度,因此对偏振控制器进行误差分析是必要的。文章针对HQQ型偏振控制器的波长相关性进行了误差分析,并通过仿真得到了输出偏振态的方位角和椭率角随波长变化的关系,这一结论对我们进行偏振控制器误差补偿有重要的意义。

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Low temperature plasma as a technology for surface modification of materials has a good application prospect in catalyst modification field. The CuO/Al2O3 catalyst was treated by O2 plasma in a dielectric barrier discharge（DBD） reactor. The effect of plasma treatment sequence on the performance of CuO/Al2O3 catalyst in the combustion of methane in ventilation air was investigated using catalytic combustion experiment and SEM,BET, XRD,and XPS characterizations. The results show that the modification of catalyst after calcination is preferred because it could improve the catalytic activity of CuO/Al2O3 catalyst for the combustion of methane in ventilation air. The CuO grain size of the catalyst prepared by plasma treatment before calcinations is eight times larger than that of the catalyst obtained after the calcinations. As a result, the CuO dispersion of the catalyst surface is significantly reduced, which affects the catalytic effect. The reason for the larger agglomeration of the CuO particles prepared by the first plasma treatment is that the plasma treatment weakens the force between the Cu and the support Al2O3 and increases the size of the CuOparticles during the subsequent calcination. At the same time, the specific surface area and pore volume increase with the post-plasma treatment compared with the first plas-ma-treated catalyst, while the pore size decreases. The sequence of plasma treatment do not change the chemical valence of copper in the catalyst. [ABSTRACT FROM AUTHOR]