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用于无线电信号传输的微波调制光信号发射机。目标是调制带宽从UHF到微波频率，调制灵敏度高到足以实现低于10分贝的链路插入损耗。方法：该项目将寻求利用正在硅上量子点(QUDOS)UKRI-EPSRC计划拨款内开发的硅上量子点激光器技术。工作将研究量子点激光器与硅衬底调制器的集成；高速调制器技术以及与现有技术的比较，如在InP衬底上的化合物半导体代工光子集成电路。这项工作将包括对设备和系统进行分析和建模，设计合适的调制器，以及测试制造的实验发射机。发射机设计制造方面的工作也将是该项目的一部分，并将涉及与从事计划补助金工作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(PIC)是一项新技术，该项目将通过首次将此类激光器与高速调制器集成来推动最先进的技术。如果项目的这一部分成功，这项工作将扩大到调查多通道粗波分复用(WDM)发射机阵列的可能性，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.