Chang C T
Appl Opt. 1979 Jul 15;18(14):2516-22. doi: 10.1364/AO.18.002516.
The cancellation between material and waveguide dispersions for weakly guiding single-mode step-index fibers has been analyzed to predict the optimum wavelength lambda(0) for zero first-order dispersion and the residual second-order dispersion T. Greater accuracy in our numerical calculation of waveguide dispersion results in significant change in lambda(0) and T compared to the previous work by another investigator. The dependence of lambda(0) and T on the normalized frequency and relative index difference has also been improved and extended numerically. Physical origin of this dependence is discussed; it is considered to be due to different optical power distributions between core and width of the source.
对于弱导单模阶跃折射率光纤，分析了材料色散与波导色散之间的抵消情况，以预测零一阶色散的最佳波长λ(0)和残余二阶色散T。与另一位研究者之前的工作相比，我们在波导色散数值计算中的更高精度导致λ(0)和T发生了显著变化。还通过数值方法改进并扩展了λ(0)和T对归一化频率和相对折射率差的依赖性。讨论了这种依赖性的物理起源；认为这是由于纤芯与光源宽度之间不同的光功率分布所致。
