Block-wise phase switching for double-sideband direct detected optical OFDM signals.

Optics Express (Impact Factor: 3.53). 06/2013; 21(11):13436-41. DOI: 10.1364/OE.21.013436
Source: PubMed

ABSTRACT We propose phase switching for either main-carrier or subcarriers of two consecutive signal blocks to achieve fading-free double-sideband direct-detection (DD). The proposed approach has twice of the electrical spectral efficiency (SE) of offset OFDM, and the same electrical SE as single-side band (SSB) OFDM. With this scheme, 40-Gb/s DD-OOFDM is successfully received over 80-km SSMF with single polarization and single detector.

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