A 1.5 Tb/s super-channel is generated using all-optical orthogonal frequency-division multiplexing (OFDM) and dual-polarization 16QAM modulation without guard interval. We investigated the effects of DSP oversampling and receiver bandwidth using experimental results and numerical simulations to evaluate our receiver design. The super-channel is transmitted over 1200 km of standard single-mode fiber on existing 100 GbE network using only 200 GHz of optical bandwidth and detected using digital coherent receiver, achieving a spectral efficiency of 7 bit/s/Hz the highest reported to date for all-optical OFDM techniques.
© 2011 IEEE
Yue-Kai Huang, Ezra Ip, Zhenxing Wang, Ming-Fang Huang, Yin Shao, and Ting Wang, "Transmission of Spectral Efficient Super-Channels Using All-Optical OFDM and Digital Coherent Receiver Technologies," J. Lightwave Technol. 29, 3838-3844 (2011)