论文标题
集成的被动非线性光学隔离器
Integrated Passive Nonlinear Optical Isolators
论文作者
论文摘要
纤维和散装隔离器广泛用于通过防止不必要的反馈来稳定激光腔。但是，他们的综合对应物被采用缓慢。尽管已经实现了几种片上光学隔离的策略，但这些策略依赖于磁材料的整合，或者与声学或电磁调节器的高频调制材料的整合。在这里，我们展示了一种使用本质上非转录的KERR非线性在环谐振器中使用的无线波激光器被动隔离的综合方法。使用氮化硅作为模型平台，我们实现了17-23DB的单个环隔离，具有1.8-5.5dB插入损失，并在35dB的级联环隔离中，插入5DB插入损失。使用这些设备，我们证明了与半导体激光芯片的混合整合和分离。
Fiber and bulk-optical isolators are widely used to stabilize laser cavities by preventing unwanted feedback. However, their integrated counterparts have been slow to be adopted. While several strategies for on-chip optical isolation have been realized, these rely on either integration of magneto-optic materials or high frequency modulation with acousto-optic or electro-optic modulators. Here, we demonstrate an integrated approach for passively isolating a continuous wave laser using the intrinsically non-reciprocal Kerr nonlinearity in ring resonators. Using silicon nitride as a model platform, we achieve single ring isolation of 17-23dB with 1.8-5.5dB insertion loss, and a cascaded ring isolation of 35dB with 5dB insertion loss. Employing these devices, we demonstrate hybrid integration and isolation with a semi-conductor laser chip.
