Conference 12028 > Paper 12028-24
Paper 12028-24

Recent progress in short reach coherent communications


Next-generation data centre networks (DCNs) will likely demand per-carrier interface rates beyond 100 Gb/s to achieve the 800 Gb/s (even 1.6 Tb/s) after 2022, putting severe pressures to intensity modulation with direct detection (IM-DD). The coherent technology with high performance digital signal processing (DSP) has been proposed as a promising candidate. However, it is still widely regarded as too expensive and power hangry for DCN owing to the demand for narrow-linewidth lasers and complex DSP algorithms. In this talk, we will review recent progress on coherent technologies in short reach, including various simplified algorithm approaches. Special emphasis will be given to the self-homodyne coherent transmission with the aid of active polarization tracking enabled receiver. It has been demonstrated that significant complexity reduction (in power consumption and DSP module) can be achieved while keeping the spectral efficiency, both in offline and real-time high-speed experiments.


Huazhong Univ. of Science and Technology (China)
Ming Tang received the B.Eng. degree from Huazhong University of Science and Technology (HUST), Wuhan, China, in 2001, and the Ph.D. degree from Nanyang Technological University (NTU), Singapore, in 2006. He conducted the postdoctoral research fellowship in the Network Technology Research Centre (NTRC) in NTU from 2006 to 2009. From February 2009 to 2011, he was a Research Scientist with Tera-Photonics Group, led by Prof. H. Ito in RIKEN, Sendai, Japan. Since March 2011, he has been a Professor at the School of optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, HUST. His current research is concerned with the high-speed optical fiber communications, including the novel transmission fibers and the advanced digital signal processing techniques. He has published more than 200 technical papers in the international recognized journals and conferences (including OFC Postdeadline paper, cited more than 4200 times in Google Scholar, H-index 30).
Huazhong Univ. of Science and Technology (China)