下一代非易失性硅基集成光开关探讨

 

 

摘要：针对硅波导采用热光或载流子色散效应折射率调节范围小、功耗高且具有易失性的缺点，提出一种基于相变材料的硅波导调节方法。相变材料具有至少2种稳定状态，折射率差别巨大，而且状态的保持不需要外加电压来维持，具有非易失特性；因此，硅与相变材料混合集成可以有效克服硅基光电子本身的物理限制，能应用于高密度、低功耗、大规模集成光开关芯片中。
关键词：硅基光电子；相变材料；混合集成光电子；光开关


Abstract: In view of the shortcomings of using thermo-optic or free-carrier plasma dispersion effect to achieve refractive index modulation of silicon waveguide, such as small tuning range, high power consumption and volatility, a method based on phase change materials is proposed. Phase change materials have at least two stable states. The refractive index has a large change upon phase change, and moreover, maintaining the state does not require an external voltage, exhibiting non-volatile characteristics. Therefore, the hybrid integration of silicon and phase change materials can effectively overcome the physical limitations of current silicon photonic devices, and can be applied to high-density, low-power, large-scale integrated optical switch fabrics.
Keywords: silicon photonics; phase change materials; hybrid integrated photonics; optical switch