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March 6, 2024 at 3:21 am
Zhang Yixiao
Subscriber老师您好!我在用charge仿真电场分布。给左边Au电极加电,右边Au电极接地,粉色为硅波导,蓝色为铌酸锂
加电后电场应当是对称分布(comsol仿真结果是对的),但charge结果中电场没有对称分布,且在正电极处下方很强。
参考:Thin Film Lithium Niobate Electro-Optic Phase Modulator – Ansys Optics
祝好!
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March 6, 2024 at 6:40 pm
Guilin Sun
Ansys Employee你确认理论上是对称的吗?
我看未必。 因为电场从正极到负极,中间掺杂导致损耗。
你可能还要看看教科书中是否有近似。软件直接求解的是飘逸扩散方程和泊松仿真,没有近似,只要材料特性正确,结果不会有大问题。
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