Nakazawa Masataka, Hirooka Toshihiko, Ruan Peng, Guan Pengyu
Research Institute of Electrical Communication, Tohoku University, Aoba-ku, Sendai-shi, Japan.
Opt Express. 2012 Jan 16;20(2):1129-40. doi: 10.1364/OE.20.001129.
We propose a novel "orthogonal" TDM transmission scheme using an optical Nyquist pulse that enables us to achieve an ultrahigh data rate and spectral efficiency simultaneously without any intersymbol interference (ISI). We analytically describe the principle of orthogonal TDM, and demonstrate a 160 Gbaud optical orthogonal TDM transmission using 40 GHz optical Nyquist pulses. Tolerance to GVD and the dispersion slope is significantly improved by virtue of the orthogonality, reduced bandwidth, and minimum ISI.
我们提出了一种使用光学奈奎斯特脉冲的新型“正交”时分复用（TDM）传输方案，该方案使我们能够同时实现超高数据速率和频谱效率，且不存在任何码间干扰（ISI）。我们从理论上描述了正交TDM的原理，并演示了使用40 GHz光学奈奎斯特脉冲的160 Gbaud光学正交TDM传输。由于正交性、降低的带宽和最小的ISI，对群速度色散（GVD）和色散斜率的耐受性得到了显著提高。
