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Slow light bimodal interferometry in one-dimensional photonic crystal waveguides

机译:一维光子晶体波导中的慢光双峰干涉测量法

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摘要

a 3D sketch of the proposed design composed of two single-mode waveguides at the input/output ports and a rectangular taper between the uniform and periodic bimodal parts. The inset shows the unit cell dimensions of the 1D PhC. b Dispersion diagram of the 1D PhC showing the first three x-even parity bands for TE-like polarization. The blue lines depict the contribution of the fundamental mode to each band, and the red lines show the contribution of the higher-order mode. Dashed lines represent the hypothetical behaviour of the modes for a uniform non-periodic structure. The green shaded area indicates the bimodal region created in the proposed structure. The design parameters are a = 370 nm, transversal element width wi = 220 nm, transversal element length we = 1400 nm, central waveguide width w = 600 nm and height h = 220 nm, and single-mode waveguide width ws = 450 nm. c Real part of the electric field x-component for the fundamental and higher-order modes in the xz plane for y = 0. The field patterns are calculated in the third band for kz = 0.3652π/a and kz = 0.4752π/a. The black dashed line represents the geometric shape of the silicon 1D PhC structure
机译:所提出的设计的3D草图由输入/输出端口的两个单模波导组成,以及均匀和周期性双峰部分之间的矩形锥度。插图显示1DPC的单元电池尺寸。 B型PHC的B色散图,示出了TE样极化的前三个X型奇偶校验带。蓝线描绘了基本模式对每个频段的贡献,红线显示了更高阶模式的贡献。虚线表示均匀非周期性结构的模式的假设行为。绿色阴影区域表示在所提出的结构中创建的双峰区域。设计参数是A = 370nm,横向元件宽度Wi = 220nm,横向元件长度We = 1400nm,中心波导宽度w = 600nm和高度h = 220nm,并且单模波导宽度ws = 450nm。 C用于Y = 0的XZ平面中的电场X组件的电场X组件的实数X组件。字段模式在KZ =0.3652π/ A和KZ =0.4752π/ a中计算出现场图案。 。黑色虚线表示硅1DPC结构的几何形状

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