Microwave Photonic Transmitter on Silicon

研究目标：该项目的目标是研究在硅衬底上实现微波调制光信号发射器，用于无线电信号传输应用。目标规格是从超高频到微波频率的调制带宽，具有足够高的调制灵敏度，以实现低于10 dB的链路插入损耗。方法：该项目将寻求利用量子点硅上激光技术，该技术是在量子点硅上（QUDOS） UKRI-EPSRC计划资助下开发的。这项工作将研究量子点激光器与调制器在硅衬底上的集成；高速调制器技术和现有技术的比较，如在InP衬底上的化合物半导体铸造光子集成电路。这项工作将包括对设备和系统的分析和建模，设计合适的调制器和测试制造的实验发射机。发射机设计制造方面的工作也将成为该项目的一部分，并将涉及与参与计划拨款的博士后研究助理密切合作。研究新颖性：集成单片集成激光器的硅光子集成电路（PICs）是一项新技术，该项目将首次将这种激光器与高速调制器集成在一起，从而推动当前技术的发展。如果这部分项目成功，工作将扩展到研究多通道粗波分复用（WDM）发射机阵列的可能性，以使多个通道能够在一根光纤上传输。

Research objectives: The objective of the project is to study the realisation of a microwave modulated optical signal transmitter on a silicon substrate for use in radio signal transmission applications. The target specifications are a modulation bandwidth ranging from UHF to microwave frequencies with a modulation sensitivity high enough to realise a link insertion loss of less than 10 dB.Methodology: The project will seek to make use of the quantum dot laser on silicon technology being developed within the QUantum Dot On Silicon (QUDOS) UKRI-EPSRC Programme Grant.The work will study integration of quantum dot lasers with modulators on silicon substrates; high speed modulator technologies and comparisons with existing technologies such as compound semiconductor foundry photonic integrated circuits on InP substrates. The work will involve analysis and modelling of both devices and systems, design of suitable modulators and testing of fabricated experimental transmitters. Work on aspects of the fabrication of the transmitter designs will also form part of the project and will involve close collaboration with post-doctoral Research Associates working on the Programme Grant.Research novelty: Silicon photonic integrated circuits (PICs) incorporating monolithically integrated lasers are a new technology and the project will move forward the state of the art by integrating such lasers with high speed modulators for the first time. If this part of the project is successful the work will be extended to investigate the possibility of multi-channel coarse Wavelength Division Multiplex (WDM) transmitter arrays to enable multiple channels to be carried on a single optical fibre.