期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 32, 期 11, 页码 643-646出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2020.2984672
关键词
C-Band DML; PAM-4; Volterra based equalizer
资金
- National Natural Science Foundation of China [61431009, 61575123]
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 x 10(-3)) and SD-FEC limit (2.2 x 10(-2)).
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