May 27, 2021 at 5:14 pm
Guilin Sun
Ansys Employee
遗憾，没有。我估计这是因为通常情况下超材料超表面是二步设计法：第一步设计Unit，根据所需要的位相优化单元结构，这一步可以优化；第二步将单元按一定排布形成器件，这部分优化的可能性不太大，因为能调整的参数不多。当然，如果不是选用这种二步法，而是随机形成二值表面，即单元形状有限个，比如小方块，某个地方可以出现（1）或者不出现（0）单元，则是可以用优化的，不过我个人认为这需要海量的仿真文件，仿真效率可能不够高，像Y Coupler可能就是这种方法。当然现在聪明人很多，也许会有更简洁的算法。下面是Grating Coupler和Y Branch优化的例子

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Inverse Design of a Grating Coupler with co-opt Weights

https://support.lumerical.com/hc/en-us/articles/1500010507742-Inverse-Design-of-a-Grating-Coupler-with-co-opt-Weights
With the release of 2020 R2.3 release, we added two new features to our photonic inverse design toolbox…
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Inverse design of grating coupler (2D)

https://support.lumerical.com/hc/en-us/articles/360042800573-Inverse-design-of-grating-coupler-2D-
In this example, we will use the Inverse Design toolbox (lumopt) to design a silicon-on-insulator (SOI) grating…
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Inverse design of grating coupler (3D)

https://support.lumerical.com/hc/en-us/articles/1500000306621-Inverse-design-of-grating-coupler-3D-
In this example, we use the Inverse Design Toolbox (lumopt) to optimize a 3D SOI grating coupler. For this…
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Inverse design of y-branch

https://support.lumerical.com/hc/en-us/articles/360042305274-Inverse-design-of-y-branch
Use the built-in parametric optimization (PO) method for inverse design of a silicon-on-insulator Y-branch to…


这两种情况因为输入输出波导固定，相对来说仿真效率比较高。如果是超透镜，因为要计算焦面分布而且比较慢，因此用这种方法存在很多问题。