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Demonstration of Direct Detected Optical OFDM Signals via Block-Wise Phase Switching

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7 Author(s)
Xi Chen ; Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia ; An Li ; Qian Hu ; Jiayuan He
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In this paper, we propose and demonstrate phase switching for either main carrier or subcarriers of two consecutive signal blocks to achieve fading-free double-sideband direct-detection. The proposed approach has twice of the electrical spectral efficiency (SE) of offset OFDM, and the same electrical SE as single-side band OFDM. We perform numerical simulation and verify the system robustness against polarization mode dispersion and laser phase noise. Our experimental results show that 40-Gb/s direct-detection OOFDM can be successfully delivered over 80-km SSMF with single polarization and single detector.

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Lightwave Technology, Journal of  (Volume:32 ,  Issue: 4 )