Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA.
Opt Lett. 2012 Oct 1;37(19):3975-7. doi: 10.1364/OL.37.003975.
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 20/40 GHz frequency spacing. An average power penalty of 5 dB (3.5) at bit error ratio of 10(-9) is achieved for 4×20 Gbit/s (4×10 Gbit/s) OFDM signal with 20 GHz frequency spacing.
我们实验演示了一种可调谐可重构的光离散傅里叶变换（DFT），用于以 20/40GHz 频率间隔解复用具有 2/3/4 个子载波的正交频分复用子载波。对于具有 20GHz 频率间隔的 4×20Gbit/s（4×10Gbit/s）OFDM 信号，在误码率为 10(-9)时，平均功率代价约为 5dB（约 3.5dB）。
