All-optical OFDM demultiplexing by spectral magnification and band-pass filtering

E. Palushani, H. C. Hansen Mulvad, D. Kong, P. Guan, M. Galili, L.K. Oxenløwe
2013 Optics Express  
We propose a simple OFDM receiver allowing for the use of standard WDM receivers to receive spectrally advanced OFDM signals. We propose to spectrally magnify the optical-OFDM super-channels using a spectral telescope consisting of two time-lenses, which enables reduced inter-carrier-interference in subcarrier detection by simple band-pass filtering. A demonstration on an emulated 100 Gbit/s DPSK optical-OFDM channel shows improved sensitivities after 4-times spectral magnification.
doi:10.1364/oe.22.000136 pmid:24514975 fatcat:cesguzkq3vblzlzxd63bjhnmcm