High-Speed Photodiodes for Applications in Photonic-Based Millimeter Wave Systems
Committee Members: Prof. Robert Weikle (ECE), Prof. Steven Bowers (ECE), Prof. Olivier Pfister (Physics)
Chair: Prof. Joe Campbell (ECE)
Advisor: Prof. Andreas Beling (ECE)
Abstract: Technologies based on millimeter wave (mmWave) (30-300 GHz) systems continue to emerge in the areas of wireless communications, radar, imaging, and spectroscopy. While exact requirements vary between applications, a fundamental requirement exists for all photonic-based platforms: mmWave sources capable of high-frequency, high-power operation and, ideally, wide tunability. To achieve mmWave operation in photonic-based approaches, photodiodes (PDs) with broad bandwidth (DC to 100’s of GHz) and high-power capability play a critical role in converting optical signals into electrical signals.
This thesis proposal aims to examine and to push forward the state-of-the-art in high-speed and high-power III-V based photodiodes for application in photonic-based mmWave systems. To this end, novel approaches to the epitaxial (semiconductor) design, microwave circuit design and integration, and methods of device fabrication are presented. My prior research completed at the time of this proposal is also presented as a means of describing the current state-of-the-art and motivation for the approaches being pursued.