KEYWORDS: Digital signal processing, Data centers, Signal processing, Single mode fibers, Forward error correction, Avalanche photodetectors, Receivers, Switches, Laser sintering, Eye
In this paper, we present a performance review of the state of the art PAM4 IC chipset implementation on the mitigation
of optical and bandwidth impairments at 100Gbps and beyond. We experimentally demonstrate, for the first time, by
employing newly developed PAM4 chipset and direct detection with commercial 25Gbaud devices, the link operates
error free under KR4 FEC threshold at 1310nm wavelength(s) for up to 40km distance of standard single mode fiber. It
is foreseeable that PAM4 signaling will soon become the viable and cost effective solution for intra and inter data center
connectivity for 40/50GbE, 100/400GbE and beyond.
We demonstrate 300-km transmission of 10Gb/s data over SMF-28 fiber without DCF
using a 4-channel tunable chirp managed laser and EDC chip at the receiver, which can fit into hot
pluggable XFP modules.
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