光学腔借助其特殊的共振线型,成为激光、精密检测、光传感、光开关等技术中尤为重要的光波器件。对已报道的光学腔中几种不同共振线型(洛伦兹型尖峰、洛伦兹型凹谷、不对称Fano型等)进行评述,并分析形成机制。最后,以硅基微环腔为例,提出调控这些共振线型的方法和相关器件结构。

Based on special resonance lineshapes, optical cavity becomes a particularly important lightwave device in technologies like laser, precision detection, optical sensing, optical switching, and so on. In this work, we review the reported different resonance lineshapes in the optical cavity (including Lorentzian peak, Lorenzian dip, asymmetric Fano shape, etc.), and then discuss their physical mechanisms. Finally, with the silicon-based microring cavity as an example, we propose methods and corresponding device structures to control these resonance lineshapes.