All-optical diode action in asymmetric nonlinear photonic multilayers with perfect transmission resonances
All-optical diode action in asymmetric nonlinear photonic multilayers with perfect transmission resonances
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DOI：
10.1103/physreva.83.023818
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发表时间：
2010-10
影响因子：
2.9
通讯作者：
S. Zhukovsky;A. G. Smirnov
中科院分区：
文献类型：
--
作者：
S. Zhukovsky;A. G. Smirnov
研究了光在理想透射共振非对称克尔非线性多层膜中的传输。结果表明，（BA）{sup k}（AB）{sup k}（AABB）{sup m}型法布里-珀罗谐振器光子晶体结构具有明显的单向性（由于谐振模的空间不对称性）和高透射性（由于存在完美的透射谐振）.这导致具有低反射损耗的非线性光学二极管动作，而不需要泵浦光束或输入脉冲调制。通过稍微扰动完美的传输谐振条件，可以调谐光学二极管的工作状态，在最小化反射损耗和最大化存在单向传输的频率带宽之间进行权衡。在直接数值模拟中展示了光学二极管的作用，在一个方向上显示出>92%的透射率，在另一个方向上显示出约22%的透射率。通过解析和数值计算，观察到了非线性引起的完全透射谐振恢复效应。所提出的几何形状比以前报道的光子准晶体的基础上的设计具有优势。
Light propagation in asymmetric Kerr-nonlinear multilayers with perfect transmission resonances is theoretically investigated. It is found that hybrid Fabry-Perot-resonator-photonic-crystal structures of the type (BA){sup k}(AB){sup k}(AABB){sup m} exhibit both pronounced unidirectionality (due to strong spatial asymmetry of the resonant mode) and high transmission (due to the existence of a perfect transmission resonance). This results in nonlinear optical diode action with low reflection losses without need for a pumping beam or input pulse modulation. By slightly perturbing the perfect transmission resonance condition, the operating regime of the optical diode can be tuned, with a tradeoff between minimizing the reflection losses and maximizing the frequency bandwidth where unidirectional transmission exists. Optical diode action is demonstrated in direct numerical simulation, showing >92% transmittance in one direction and about 22% in the other. The effect of perfect transmission resonance restoration induced by nonlinearity was observed analytically and numerically. The proposed geometry is shown to have advantages over previously reported designs based on photonic quasicrystals.