Sensitivity Bound for Optically-Preamplified Direct-Detected OFDM Systems Using Spectrally Matched Filters

Abstract

We investigate the sensitivity bound, in terms of OSNR, for direct-detected OFDM systems in presence of optically-preamplified receivers, and show that OSNR requirement for DD-OFDM could theoretically reach that of CO-OFDM using the spectrally matched filters. (C) 2009 Optical Society of America