Title :
Demonstration of Direct Detected Optical OFDM Signals via Block-Wise Phase Switching
Author :
Xi Chen ; An Li ; Qian Hu ; Jiayuan He ; Di Che ; Yifei Wang ; Shieh, William
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
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.
Keywords :
OFDM modulation; numerical analysis; optical communication; phase noise; bit rate 40 Gbit/s; block-wise phase switching; consecutive signal blocks; direct detected optical OFDM Signals; direct-detection OOFDM; electrical spectral efficiency; fading-free double-sideband direct-detection; laser phase noise; numerical simulation; polarization mode dispersion; single-side band OFDM; Laser noise; OFDM; Optical fibers; Optical noise; Optical switches; Signal to noise ratio; Direct detection (DD); optical OFDM;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2013.2295374