Adjoint shape optimization applied to electromagnetic design
Adjoint shape optimization applied to electromagnetic design
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DOI：
10.1364/oe.21.021693
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发表时间：
2013-09-09
期刊：
影响因子：
3.8
通讯作者：
Yablonovitch, Eli
中科院分区：
文献类型：
--
作者：
Lalau-Keraly, Christopher M.;Bhargava, Samarth;Yablonovitch, Eli
我们提出了一个基于伴随的电磁优化设计。它将商业麦克斯韦求解器嵌入到最速下降反设计优化算法中。伴随方法计算在空间中的所有点的形状导数，但只需要两个“向前”模拟。几何形状参数化是通过水平集方法。我们的伴随设计优化应用到硅光子Y结分离器，以前已经研究了随机方法。由于伴随方法中计算形状导数的速度，在更大的设计空间内收敛更快。这对于复杂电磁元件的设计是一种非常有效的方法。(C)2013年美国光学学会
We present an adjoint-based optimization for electromagnetic design. It embeds commercial Maxwell solvers within a steepest-descent inverse-design optimization algorithm. The adjoint approach calculates shape derivatives at all points in space, but requires only two "forward" simulations. Geometrical shape parameterization is by the level set method. Our adjoint design optimization is applied to a Silicon photonics Y-junction splitter that had previously been investigated by stochastic methods. Owing to the speed of calculating shape derivatives within the adjoint method, convergence is much faster, within a larger design space. This is an extremely efficient method for the design of complex electromagnetic components. (C) 2013 Optical Society of America