有限差分模式 meaning in English

finite-difference model

In order to design wavelength insensitive power splitter based on soi , the wavelength characteristic of mach - zehnder interferometer were investigated by means of bpm and fdm ( finite - difference method ) . then the parameters of mach - zehnder interferometer were optimum designed using genetic algorithm . besides , genetic algorithm is also used to optimize the upper tier parameters of mzi based silica - on - silicon to attain a flat spectral response
为了设计对波长不敏感的soi材料的mz功分器，利用束传播法( bpm )和有限差分模式解方法( fdm )对mach - zehnder结构的组成部分定向耦合器和相位延迟部分做了波长相关特性的计算，然后通过遗传算法优化设计了mach - zehnder的结构参数。