High-performance optical sources for photonic integrated platforms

化合物半导体（CS）激光器是光通信和传感的关键使能技术。服务器中的芯片间传输带宽每两年翻一番，这已经对光子集成系统（例如，基于硅光子的光学互连）提出了越来越多的需求，以解决带宽瓶颈问题。此外，诸如光探测和测距（LiDAR）等应用的出现，例如在自主交通中使用，需要集成具有高级功能的光电组件。这些技术依赖于能够产生超过100 mW的光功率和接近100 kHz的光谱线宽的激光器。集成光子系统的大规模采用将要求激光器具有低功耗和承受恶劣环境的能力，例如超过100度的温度。量子点激光器在与其他光学元件集成时具有几个关键优势;它们对高温和光学反馈相对不敏感，并且能够容忍材料缺陷。该项目旨在开发和测试量子点集成光电器件，目标是电信和激光雷达应用。有一系列的方法和方向，可以采取的学生，这将与学术和行业主管讨论。

Compound Semiconductor (CS) lasers are the key enabling technology for optical communication and sensing. The doubling of inter-chip transmission bandwidth in servers every two years has put an increasing need on photonic integrated systems (e.g. silicon-photonic based optical-interconnects) to solve the bandwidth bottleneck problem. In addition, the emergence of applications such as light-detection and ranging (LiDAR) used, for example, in autonomous transportation, requires integration of optoelectronic components with advanced functionality. Such technologies rely on lasers that are capable of producing optical powers beyond 100mW and spectral line-widths approaching 100kHz. Large-scale uptake of integrated photonic systems will require lasers featuring low-power consumption and the ability to withstand harsh environments, e.g. temperatures beyond 100 degree. Quantum dot lasers offer several key advantages when it comes to integration with other optical components; they are relatively insensitive to elevated temperatures and optical feedback, and are tolerant to material defects. This project will aim to develop and test quantum dot integrated optoelectronic devices, targeting applications in telecoms and LiDAR. There are a range of approaches and directions that can be taken by the student, which will be discussed with the academic and industry supervisors.