Kang I, Liu X, Chandrasekhar S, Rasras M, Jung H, Cappuzzo M, Gomez L T, Chen Y F, Buhl L, Cabot S, Jaques J
Bell Laboratories, Alcatel-Lucent, Holmdel, New Jersey 07733, USA.
Opt Express. 2012 Jan 16;20(2):896-904. doi: 10.1364/OE.20.000896.
We propose a novel energy-efficient coherent-optical OFDM transmission scheme based on hybrid optical-electronic signal processing. We demonstrate transmission of a 0.26-Tb/s OFDM superchannel, consisting of 13 x 20-Gb/s polarization-multiplexed QPSK subcarrier channels, over 400-km standard single-mode fiber (SSMF) with BER less than 6.3x10(-4) using all-optical Fourier transform processing and electronic 7-tap blind digital equalization per subchannel. We further explore long-haul transmission over up to 960 km SSMF and show that the electronic signal processing is capable of compensating chromatic dispersion up to 16,000 ps/nm using only 15 taps per subchannel, even in the presence of strong inter-carrier interference.
我们提出了一种基于混合光电信号处理的新型节能相干光正交频分复用（OFDM）传输方案。我们展示了一个0.26-Tb/s OFDM超通道的传输，该超通道由13个20-Gb/s偏振复用四相相移键控（QPSK）子载波通道组成，通过400公里标准单模光纤（SSMF）传输，使用全光傅里叶变换处理和每个子通道的电子7抽头盲数字均衡，误码率小于6.3×10^(-4)。我们进一步探索了长达960公里SSMF的长距离传输，并表明即使在存在强载波间干扰的情况下，电子信号处理仅使用每个子通道15个抽头就能补偿高达16,000 ps/nm的色散。
