Chip-scale, tunable narrow-linewidth hybrid integrated diode lasers based on quantum-dot RSOAs at 1.3 μm are demonstrated through butt-coupling to a silicon nitride photonic integrated circuit. The hybrid laser linewidth is around 85 kHz, and the tuning range is around 47 nm. Then, a fully integrated beam steerer is demonstrated by combining the tunable diode laser with a waveguide surface grating. Our system can provide beam steering of 4.1° in one direction by tuning the wavelength of the hybrid laser. Besides, a wavelength-tunable triple-band hybrid laser system working at ∼1, ∼1.3, and ∼1.55 μm bands is demonstrated for wide-angle beam steering in a single chip.

中文翻译：

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通过在 Si3N4 光子学平台中使用可调谐窄线宽混合激光器实现集成光束控制

通过对接耦合到氮化硅光子集成电路，展示了基于 1.3 μm 量子点 RSOA 的芯片级可调谐窄线宽混合集成二极管激光器。混合激光线宽约为 85 kHz，调谐范围约为 47 nm。然后，通过将可调谐二极管激光器与波导表面光栅相结合，展示了完全集成的光束转向器。我们的系统可以通过调整混合激光器的波长在一个方向上提供 4.1° 的光束转向。此外，还展示了一种在~1、~1.3 和~1.55 μm 波段工作的波长可调三波段混合激光系统，用于单芯片中的广角光束控制。