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Seminar: "Boost the Communication Data Rate Using Beams Carrying Orbital Angular Momentum(OAM)" by Guodong Xie

Monday, October 2, 2017 12:00 PM to 1:00 PM
CREOL Room 103

Guodong Xie
University of Southern California


There is a continuing growth in the demand for data bandwidth, and the multiplexing of multiple independent data streams has the potential to provide the needed data capacity. One technique uses the spatial domain of an electromagnetic (EM) wave, i.e., space division multiplexing (SDM), has been reported for increased transmission capacity and spectral efficiency of a communication system. A subset of SDM is mode division multiplexing (MDM), in which multiple orthogonal beams each on a different mode can be multiplexed. A potential modal basis set to achieve MDM is to use orbital angular momentum (OAM) of EM waves. In such a system, multiple OAM beams each carrying an independent data stream are multiplexed at the transmitter, propagate through a common medium and are demultiplexed at the receiver. As a result, the total capacity and spectral efficiency of the communication system can be multiplied by a factor equal to the number of transmitted OAM modes. In this talk, the use of OAM multiplexing for high-capacity free-space optical communications will be introduced. In additional, different technical challenges (e.g. atmospheric turbulence and crosstalk) as well as potential techniques to mitigate such degrading effects will be discussed.


Guodong Xie was born in Qixia, China. He received his B.E. degree (2009) from Beijing University of Posts and Telecommunications (BUPT), Beijing, China, and his M.S. degree (2012) from Peking University (PKU), Beijing, China. He is currently pursuing his Ph.D. degree under the supervision of Professor Alan Willner at University of Southern California (USC), Los Angeles, California. He is a student member of the IEEE Photonics Society and the Optical Society of America (OSA). His research focuses include free-space-optical/fiber/millimeter-wave communications, optics/radio-frequency sensing/imaging, and atmospheric optics. He has authored or co-authored 1 book chapter, 1 patent, 39 journal papers, and 60 conference papers, with >1700 Google Scholar citations. He also serves as a frequent reviewer for over 15 journals, including Applied Optics, IEEE Communication Letter, IEEE Transactions on Communications, Optical Communications, Optics Express, and Optics Letters. He is one of the recipients of IEEE Photonic Society Graduate Student Fellowship (2017), Chinese-American Engineers and Scientists Association of Southern California Scholarship (2017), Chinese Government Award for Outstanding Self-Financed Students Abroad (2016), USC Ming Hsieh Institute Ph.D. Scholar (2016), and USC Provost Graduate Fellowship (2012).

For additional information:

Guifang Li

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