Here, a new platform for a realization of novel nonvolatile optical switching devices was proposed that takes an advantage of high field confinement provided by plasmonics and multi-state programming capabilities of chalcogenide phase change materials. A high reduction in the overall energy consumption consists of a high field enhancement provided by plasmonic that allow to lower the switching energies and implementation of phase change materials that allow to operate under a zero-static power consumption. A combination of plasmonics and phase change materials provide additionally an essential improvement in terms of a switching time, attenuation contrast and possibility to perform a phase shift with the wide bandgap phase change materials. In most of the all-optical switching photonic devices, a switching mechanism is realized optically through heating of phase change materials. Here, two stage heating process is proposed that is based on the absorption of light by phase change materials itself, and a heat transfer from the metal stripe under an absorption of light by a metal. Thus, compared to any other previously presented optical switches, even a wide bandgap phase change materials that show zero absorption of light can be implemented in the proposed structure. The proposed plasmonic waveguide arrangement is extremely sensitive to any changes of the phase change material properties, thus, even a minor change of temperature provides an essential change in the transmitted light.

中文翻译：

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无限视界平均场随机系统H鈭约束下的帕累托最优策略


这里，提出了一种用于实现新型非易失性光开关器件的新平台，该平台利用了等离子体激元提供的高场限制和硫族化物相变材料的多态编程能力。总体能耗的大幅降低包括等离子体激元提供的高场增强，可以降低开关能量，以及相变材料的实现，可以在零静态功耗下运行。等离子体激元和相变材料的组合在切换时间、衰减对比度以及利用宽带隙相变材料执行相移的可能性方面提供了额外的本质改进。在大多数全光开关光子器件中，开关机制是通过相变材料的加热以光学方式实现的。这里，提出了基于相变材料本身对光的吸收以及金属吸收光下金属条的热传递的两阶段加热过程。因此，与任何其他先前提出的光开关相比，即使是光吸收为零的宽带隙相变材料也可以在所提出的结构中实现。所提出的等离子体波导布置对相变材料特性的任何变化极其敏感，因此，即使温度的微小变化也会导致透射光的本质变化。