40Gbps double-sided multiband OFDM-PON based on polarization interleaving and direct detection

We present a cost-effective 40Gb/s transmission scheme for OFDM-PON over 100km SSMF based on double-sided multiband and polarization interleaving, which significantly reduce the complexity of the system with only one optical carrier at the transmitter. The optimum frequency interval between two sidebands is small and spectral efficiency reaches 2.1b/s/Hz.