交迭积分 meaning in English

overlaintegral

In this dissertation , the varied characteristics of soi rib waveguide were investigated , and the calculated results as well as simulated plots in theory were presented . it was the first time that a 3d overlap integral method was used to calculate the transition loss between the rib waveguides and the slab waveguides , in which the effect of the mode distribution in rib waveguides on the coupling efficiency was taken into account
针对上述问题，本论文对soi波导的各种特性进行探讨并给出了详细的计算结果，首次用三维功率交迭积分法计算了soi波导器件中波导过渡区的损耗，这种方法考虑了脊形波导模式分布对过渡区耦合效率的影响。