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Photonics – Chinese

Photonics – Chinese

Topics related to Lumerical and more, in Chinese language.

FDTD仿真1×2MMI光源几乎无法在波导中传播

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    • 1374934695
      Subscriber

      问题:仿真X切Y传铌酸锂MMI,但是光源几乎无法在直波导中传播,损耗很大,什么原因?

      参数结构:脊波导(厚600nm,刻蚀300nm),锥形波导(长8um,底宽分别1um、2um),多模干涉区(宽7um、长34.74um)

      光源:模式光。仿真时间:2000fs

      图1:光源;图2:仿真后YZ平面监视器光场图;图3:模型

    • sidi.lu
      Subscriber

      您好,你这种情况看起来像是光源的模场与波导不匹配,光并没有耦合进去。建议重新您参考Mode source - Simulation object – Ansys Optics 设置mode source,并使用更精细的网格,比如调大mesh accuracy 或者使用mesh overide。

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