Far Brusatori Mónica, Duplat Daniel N, Degli-Eredi Iterio, Nielsen Lars, Tønning Peter L, Castera Pau, Volet Nicolas, Heck Martijn J R
Opt Lett. 2022 Jun 1;47(11):2686-2689. doi: 10.1364/OL.457367.
Two photonic integrated circuits (PICs) are coupled to form a hybridly integrated semiconductor ring laser in the telecom C band with an intrinsic linewidth of (158±21) Hz. This is, to the best of our knowledge, the first time an InP active-passive platform is used in conjunction with an integrated low-loss resonator to obtain a narrow-linewidth laser implemented using generic foundry platforms. The presented results pave the way for a hybrid integrated platform for microwave photonics (MWP), as the demonstrated device includes multiple active-passive components, and its narrow optical linewidth can potentially be translated to a narrow-linewidth microwave signal. Furthermore, as the laser is based on hybrid integration of two PICs from generic foundry platforms, there is a path to reproducible and low-cost devices.
两个光子集成电路（PIC）耦合在一起，形成了一个工作在电信C波段的混合集成半导体环形激光器，其本征线宽为(158±21)Hz。据我们所知，这是首次将InP有源-无源平台与集成低损耗谐振器结合使用，以获得采用通用代工平台实现的窄线宽激光器。所展示的结果为微波光子学（MWP）的混合集成平台铺平了道路，因为所展示的器件包含多个有源-无源组件，其窄的光学线宽有可能转换为窄线宽微波信号。此外，由于该激光器基于来自通用代工平台的两个PIC的混合集成，因此存在实现可重复和低成本器件的途径。
