Chaumet P C, Demésy G, Gauthier-Lafaye O, Sentenac A, Popov E, Fehrembach A-L
Opt Lett. 2016 May 15;41(10):2358-61. doi: 10.1364/OL.41.002358.
The rigorous modeling of large (hundreds of wavelengths) optical resonant components patterned at a subwavelength scale remains a major issue, especially when long range interactions cannot be neglected. In this Letter, we compare the performances of the discrete dipole approximation approach to that of the Fourier modal, the finite element and the finite difference time domain methods, for simulating the spectral behavior of a cavity resonator integrated grating filter (CRIGF). When the component is invariant along one axis (two-dimensional configuration), the four techniques yield similar results, despite the modeling difficulty of such a structure. We also demonstrate, for the first time to the best of our knowledge, the rigorous modeling of a three-dimensional CRIGF.
对亚波长尺度下的大型（数百个波长）光学谐振元件进行精确建模仍然是一个主要问题，特别是当长程相互作用不可忽略时。在本信函中，我们比较了离散偶极近似方法与傅里叶模态法、有限元法和时域有限差分法在模拟腔谐振器集成光栅滤波器（CRIGF）光谱行为方面的性能。当元件沿一个轴不变（二维配置）时，尽管这种结构的建模难度较大，但这四种技术仍能得出相似的结果。据我们所知，我们还首次展示了对三维CRIGF的精确建模。
