Optical Orthogonal frequency division multiplexing (OOFDM) is shown to outperform RZ-OOK transmission in high-speed optical communications systems in terms of transmission distance and spectral efficiency. The OOFDM in combination with the subcarrier multiplexing offers a significant improvement in spectral efficiency of at least 2.9 bits/s/Hz.
Hongwei ChenMinghua ChenShizhong Xie
Mohamed KhedrMoustafa H. AlyMohamed Tamazin
Zizheng CaoH.P.A. van den BoomE. TangdionggaA.M.J. Koonen