1. 50 Gbps PAM-4 Over Up to 80-km Transmission With C-Band DML Enabled by Post-Equalizer
- Author
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Haiyun Xin, Hao He, Kuo Zhang, Longsheng Li, and Weisheng Hu
- Subjects
Physics ,C band ,business.industry ,Optical distortion ,Bandwidth (signal processing) ,Equalizer ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Optics ,Nonlinear distortion ,Dispersion (optics) ,Chirp ,Electrical and Electronic Engineering ,business - Abstract
In this letter, transmission of directly-modulated PAM-4 in C-band is experimentally demonstrated. Instead of introducing any optical devices for dispersion management, we employ receiver-side equalization consisting of Volterra-based FFE and Volterra-based DFE, to mitigate the signal distortions induced by the frequency chirp effect and chromatic dispersion. Results indicate that, PAM-4 transmissions of 56 Gbps over 60-km and 60 Gbps over 80-km are achieved respectively under the HD-FEC limit ( $3.8\times 10^{-3}$ ) and SD-FEC limit ( $2.2\times 10^{-2}$ ).
- Published
- 2020