Abstract

We experimentally demonstrate a tunable and reconfigurable optical discrete Fourier transform (DFT) to demultiplex orthogonal-frequency-division-multiplexed subcarriers with 2/3/4 subcarriers at 20/40GHz frequency spacing. An average power penalty of 5dB (3.5) at bit error ratio of 109 is achieved for 4×20Gbit/s (4×10Gbit/s) OFDM signal with 20 GHz frequency spacing.

© 2012 Optical Society of America

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