FDTD非线性仿真

- May 9, 2022 at 3:20 pm
  
  10154355
  Subscriber
  
  老师，您好！我用FDTD进行非线性仿真遇到了问题，希望您能给予帮助。采用一直波导仿真二次谐波的产生（模态相位匹配方案），我想用下式计算二次谐波产生的归一化效率，Pout是谐波功率，Pin是基频光功率。
- May 9, 2022 at 4:06 pm
  
  Guilin Sun
  Ansys Employee
  
  “利用sourcepower(f1/2)计算基频光功率”，我估计你是想说计算谐波入射时的功率吧？
  
  原则上没有问题，只是如何精确计算有一定问题，因为谐波信号相对基频光很弱，无论在时域还是在频域都不会很精确。不过大致评估是可以的。

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