An all-optical OFDM system based on time lenses

We experimentally demonstrate a multi-pulse all-optical time domain continuous Fourier transformation (MOFT) based on a time lens. With two of MOFT devices, one is at transmitter, the other is at receiver, we experimentally show a successful all-optical OFDM fiber transmission system with 20Gbit/s 200km transmission without any dispersion compensations.