Department of Electrical
Engineering, University of Melbourne
Date and time: 11.30am - 12.30pm, Friday 10th Oct, 2008
Venue: 10.08.03 (Building 10, Level 8, Room 3)
Abstract:
As the demand for data bandwidth increases, driven by
the phenomenal growth of the Internet, the focus of optical communication is
the
development of wavelength-division multiplexed (WDM)
and reconfigurable optical networks with a transmission speed approaching
100-Gb/s. Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM)
has recently been proposed and has emerged as an attractive modulation format
for the forth coming 100-Gb/s Ethernet.
OFDM is a multi carrier transmission technique which
has been incorporated into wireless standards (e.g. 802.11a/g, WiFi) and digital
audio and video broad casting (e.g. DVB, DVB-T). CO-OFDM is
an optical equivalent of RF OFDM which posses many merits that are critical for
future high-speed fiber
transmission systems. First, the chromatic dispersion and polarization mode
dispersion (PMD) of the transmission
system can be effectively estimated and mitigated. Second,
the spectra of OFDM subcarriers are partially
overlapped, resulting in high optical
spectral efficiency. Third, the small electrical bandwidth
requirement makes CO-OFDM extremely attractive for the high-speed circuit
design.
This talk will provide an overview of the CO-OFDM
system and an introduction of the current work.
About the speaker:
Yan Tang received the B.E. degree in Electronic
Engineering (with first class honours) in 2004, from Southeast University,
China. She received the M.E. degree in Telecommunication in 2006, from
University of Melbourne. Currently, she is working toward the Ph.D. degree in
NICTA Victoria Laboratory, Electrical&Electronic
Engineering department, University of Melbourne. Her research interests are
signal processing and optical communication system especially the optimum
design for CO-OFDM transmitter and receiver. During her Ph.D
study, she has published 11 papers in top journals and conferences, including
Optics Express, IEEE Photonics Technology Letters, Journal of Lightwave Technology, Optical Fibre Communications
Conference (OFC), etc.