MASTER OF SCIENCE THESIS DEFENSE BY: Jeffrey Rodriguez
When: Friday,
February 23, 2018
10:00 AM
-
12:00 PM
Where: Science & Engineering Building, Lester W. Cory Conference Room: Room 213A
Cost: Free
Description: Topic: Modeling and Design of High-Speed/High-Linearity Photodetectors for Optical to RF Conversion
Location: Lester W. Cory Conference Room, Science & Engineering Building (SENG), Room 213A
Abstract:
The advantages of using optical fiber as a transmission medium for microwave signals have led to an increasing interest in the design and implementation of microwave photonic links. Advantages of optical fiber include; low loss, low weight, flexibility, immunity to Electro-magnetic interference (EMI), and the prospect of higher bandwidth. Using the properties of optical fiber; microwave photonic links can generate, distribute, and process microwave signals for applications such as radar, communications, and sensors. Despite its many advantages over traditional microwave links, microwave photonic links do still suffer from higher noise figure, poor dynamic range due to the nonlinear properties in the electrical-to-optical (E/O) and optical-to-electrical (O/E) conversion processes. This report presents a model and design of an efficient high-speed/high-linearity photodetector capable of meeting requirements imposed on the O/E conversion process by modern microwave and Electronic Warfare (EW) systems. The modeling and design effort will include the study of a backside illuminated Mesa structure Uni-Travelling-Carrier (UTC) Photodetector and a traveling wave UTC structure (TW-UTC). The Mesa structure design will target applications from L band to K band, whereas the TW-UTC structure will target W band applications. Both designs will include a novel approach to the semiconductor epitaxial layer structure to achieve the desired performance.
NOTE: All ECE Graduate Students are ENCOURAGED to attend.
All interested parties are invited to attend. Open to the public.
Advisor: Dr. Yifei Li
Committee Members: Dr. David A. Brown and Dr. Dayalan Kasilingam, Department of Electrical & Computer Engineering, UMASS Dartmouth and Dr. Tariq Manzur, Naval Undersea Warfare Center (NUWC)
*For further information, please contact Dr. Yifei Li at 508.999.8841, or via email at yifei.li@umassd.edu.
Location: Lester W. Cory Conference Room, Science & Engineering Building (SENG), Room 213A
Abstract:
The advantages of using optical fiber as a transmission medium for microwave signals have led to an increasing interest in the design and implementation of microwave photonic links. Advantages of optical fiber include; low loss, low weight, flexibility, immunity to Electro-magnetic interference (EMI), and the prospect of higher bandwidth. Using the properties of optical fiber; microwave photonic links can generate, distribute, and process microwave signals for applications such as radar, communications, and sensors. Despite its many advantages over traditional microwave links, microwave photonic links do still suffer from higher noise figure, poor dynamic range due to the nonlinear properties in the electrical-to-optical (E/O) and optical-to-electrical (O/E) conversion processes. This report presents a model and design of an efficient high-speed/high-linearity photodetector capable of meeting requirements imposed on the O/E conversion process by modern microwave and Electronic Warfare (EW) systems. The modeling and design effort will include the study of a backside illuminated Mesa structure Uni-Travelling-Carrier (UTC) Photodetector and a traveling wave UTC structure (TW-UTC). The Mesa structure design will target applications from L band to K band, whereas the TW-UTC structure will target W band applications. Both designs will include a novel approach to the semiconductor epitaxial layer structure to achieve the desired performance.
NOTE: All ECE Graduate Students are ENCOURAGED to attend.
All interested parties are invited to attend. Open to the public.
Advisor: Dr. Yifei Li
Committee Members: Dr. David A. Brown and Dr. Dayalan Kasilingam, Department of Electrical & Computer Engineering, UMASS Dartmouth and Dr. Tariq Manzur, Naval Undersea Warfare Center (NUWC)
*For further information, please contact Dr. Yifei Li at 508.999.8841, or via email at yifei.li@umassd.edu.
Contact:
ECE: Electrical & Computer Engineering Department 508.999.9164 http://www.umassd.edu/engineering/ece/
Topical Areas: General Public, University Community, College of Engineering, Electrical and Computer Engineering