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 frequency spacing. An average power penalty of () at bit error ratio of is achieved for () OFDM signal with 20 GHz frequency spacing.
© 2012 Optical Society of America
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