Nonlinear limits for high bit-rate O-OFDM systems
20 July 2009
Optical OFDM's high PAPR values limit the systems nonlinear tolerance (NLT). A 2.6-dB improvement in NLT has been found by peak clipping. Towards higher bit rates above 50 Gb/s, we observe an additional NLT increase of 8 dB per 10x increase in signal bit rate.