Abstract:

There has been a trend of migration to high spectral efficiency transmission in optical fiber communications. To improve spectral efficiency, the frequency guard band between neighboring wavelength channels continues to shrink. In this talk, analytical expressions for nonlinear system performance of densely spaced coherent optical OFDM (CO-OFDM) systems will be presented. The solutions include the results for the achievable Q factor, optimum launch power density, nonlinear threshold of launch power density, and information spectral efficiency limit. These analytical results identify their dependence on system parameters including fiber dispersion, number of spans, dispersion compensation ratio, and overall bandwidth.

Biography:

Xi Chen received the B.E. degree in communication engineering in 2008, from National University of Defense Technology, Changsha, China. She is working toward the Ph.D. degree in electrical and electronic engineering at the University of Melbourne, Melbourne, Australia. She was doing internship at Bell Labs, New Jersey, USA during the summer of 2011. Her research interests include optical OFDM systems, fiber nonlinear effects, and few-mode fiber (FMF) based communication systems.