论文标题
极化分离光栅耦合器的伴随优化
Adjoint optimization of polarization-splitting grating couplers
论文作者
论文摘要
我们已经在硅启动器（SOI）中设计了一个极化的光栅耦合器（PSGC），在数值模拟中具有1.2 dB峰值损失，这是我们最佳知识的PSGC的最佳模拟性能。基于伴随方法的形状优化使我们能够探索与常规设计方法相互棘手的复杂几何形状。基于物理学的PSGC知识是从伴随优化中提取的，可以以最少的努力转移到其他平台。
We have designed a polarization-splitting grating coupler (PSGC) in silicon-oninsulator (SOI) that has 1.2 dB peak loss in numerical simulations, which is the best simulated performance of PSGCs without a bottom reflector to the best of our knowledge. Adjoint method-based shape optimization enables us to explore complex geometries that are intractable with conventional design approaches. Physics-based process-independent knowledge of PSGCs is extracted from the adjoint optimization and can be transferred to other platforms with a minimum of effort.
