SC-FDE for MMF short reach optical interconnects using directly modulated 850 nm VCSELs

Abstract

Abstract:We propose the use of single-carrier frequency-domain equalization (SC-FDE) for the compensation of modal dispersion in short distance optical links using multimode fibers and 850 nm VCSELs. By post-processing of experimental data, we demonstrate, at 7.9% overhead, the error-free transmission (over a 4 Mbit sequence) of OOK-modulated 5 Gbps over 2443 meters of OM3 fiber (with a nominal 3300 MHz×km bandwidth). The proposed solution may be applied as a low cost alternative for data center and supercomputer interconnects. 12. N. Benvenuto, and S. Tomasin, "On the comparison between OFDM and single carrier modulation with a DFE using a frequency-domain feedforward filter," IEEE Trans. Commun. 50, 947-955 (2002).

Visible Light Communications towards 5G

“…For instance, Gb/s transmissions were reported in [8] and [29] by implementing DMT. Power efficient schemes such as low peak-to-average power ratio (PAPR) single carrier frequency-domain equalization (SC-FDE) was proposed in [30]. Here the IFFT block was moved to the receiver side to avoid the generation of complicated waveforms and consequently reduced PAPR.…”