Journal article
Block-wise phase switching for double-sideband direct detected optical OFDM signals
X Chen, A Li, D Che, Q Hu, Y Wang, J He, W Shieh
Optics Express | Published : 2013
DOI: 10.1364/OE.21.013436
Open access
Abstract
We propose phase switching for either main-carrier or subcarriers of two consecutive signal blocks to achieve fading-free doublesideband 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 DDOOFDM is successfully received over 80-km SSMF with single polarization and single detector. © 2013 Optical Society of America.