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7 March 2016 100 Gb/s optical discrete multi-tone transceivers for intra- and inter-datacenter networks
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Abstract
Discrete multi-tone (DMT) technology is an attractive modulation technology for short-reach application due to its high spectral efficiency and simple configuration. In this paper, we first explain the features of DMT technology then discuss the impact of fiber dispersion and chirp on the frequency responses of the DMT signal and the importance in the relationship between chirp and the optical transmission band. Next, we explain our experiments of 100-Gb/s DMT transmission of 10 km in the O-band using directly modulated lasers for low-cost application. In an inter-datacenter network of more than several tens of kilometers, fiber dispersion mainly limits system performance. We also discuss our experiment of 100-Gb/s DMT transmission up to 100 km in the C-band without a dispersion compensator by using vestigial sideband spectrum shaping and nonlinear compensation.
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Ryo Okabe, Toshiki Tanaka, Masato Nishihara, Yutaka Kai, Tomoo Takahara, Bo Liu, Lei Li, Zhenning Tao, and Jens C. Rasmussen "100 Gb/s optical discrete multi-tone transceivers for intra- and inter-datacenter networks", Proc. SPIE 9775, Next-Generation Optical Networks for Data Centers and Short-Reach Links III, 97750F (7 March 2016); https://doi.org/10.1117/12.2210778
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