Where: Bldg 9, Lecture Hall 2325
Description
Free-space optical communication (FSO) is an optical wireless system where optical and wireless technologies converge. FSO uses light propagating in free space to transmit high-speed data from one end to another. In this talk, we will provide an overview of the FSO communication technology with its past, present, and future. The birth of FSO technology was due to the invention of the laser in 1960s. From that time on, FSO communication systems have been continuously studied and deployed in both military and civilian applications. Lower costs, larger available bandwidths, better security, greater deployment flexibility, and a reduced time-to-market are all significant benefits of FSO systems. This technology has found numerous applications such as covet military communication, wireless backhaul, LAN-to-LAN connections on campuses, and ultra-fast high-frequency trading. The Connectivity Lab at Facebook is currently exploring the FSO technology to bring Internet to the third-world using drones. FSO technology, which was originally developed for NASA for inter-satellite application, continues to make new record in outer space communication when NASA recently reported to beam an image of Mona Lisa to the Lunar Reconnaissance Orbiter roughly 240,000 miles away. We are living in an interesting time to witness the rebirth of FSO technology with many newly introduced applications. This lecture will conclude with a tutorial on Free-Space Optical Communication: Free-space optical (FSO) communication is a form of optical wireless communication and remains as an active research area, as the optical wireless research community continues to grow. Each year, IEEE journals publish dozens of original research articles on FSO communication, and many newcomers with traditional RF wireless communication background are finding research problems related to FSO communication. However, FSO communication is fundamentally different from RF wireless communication, though these two technologies share some similarities. Audience: This tutorial is primarily targeted towards graduate students and researchers who have no prior knowledge in FSO communication, but are interested in expanding their research topics to this field. We will review fundamentals of FSO communication, have in-depth study of some important FSO systems, and suggest several possible research problems and directions. This lecture is a part of our Optical Wireless Communications Workshop.
Julian Cheng
Julian Cheng received a B. Eng. Degree (First Class) in electrical engineering from the University of Victoria, Victoria, BC, Canada, a M.Sc. (Eng.) degree in mathematics and engineering from Queen’s University, Kingston, ON, Canada, and a PhD degree in electrical engineering from the University of Alberta, Edmonton, AB, Canada. In July 2006, He joined the School of Engineering, The University of British Columbia, Okanagan campus, in Kelowna, BC, Canada as an Assistant Professor. In July 2011, he was promoted to Associate Professor with tenure in the same School. Previously, Dr. Cheng worked for Bell Northern Research (BNR) and Northern Telecom (later known as NORTEL Networks), and taught at both University of Alberta and Lakehead University. His current research interests include digital communications over wireless channels, orthogonal frequency division multiplexing, spread spectrum communications, statistical signal processing for wireless applications, and optical wireless communications. Dr. Cheng co-chaired the 12th Canadian Workshop on Information Theory (CWIT 2011), which was held May 18-22, 2011 on UBC Okanagan campus. In 2012, he chaired the 2012 Wireless Communications, which was held July 3-5, 2012 in Banff, Canada. Currently, he serves as an Editor for IEEE Communications Letters, IEEE Transactions on Wireless Communications, an Associate Editor for IEEE Access, and a Guest Editor for a special issue of IEEE Journal on Selected Areas in Communications on optical wireless communications. Dr. Cheng is also a Senior Member of IEEE.
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