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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 32,
  • Issue 4,
  • pp. 722-728
  • (2014)

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

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Abstract

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.

© 2013 IEEE

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