Modulation format and digital signal processing for IM-DD optics at post-200G era
200-Gb/s per lane intensity-modulation (IM) direct-detection (DD) optics are being
commercialized to support 800G and 1.6 T applications inside datacenters. Though IM-DD …
commercialized to support 800G and 1.6 T applications inside datacenters. Though IM-DD …
Recent advances in coherent optical communications for short-reach: Phase retrieval methods
Short-reach transmission systems traditionally utilize intensity modulation (IM) at the
transmitter and direct detection (DD) at the receiver due to their cost-effectiveness, small …
transmitter and direct detection (DD) at the receiver due to their cost-effectiveness, small …
The evolution of faster-than-Nyquist signaling
The fifty-year progress of faster-than-Nyquist (FTN) signaling is surveyed. FTN signaling
exploits non-orthogonal dense symbol packing in the time domain for the sake of increasing …
exploits non-orthogonal dense symbol packing in the time domain for the sake of increasing …
IM/DD beyond bandwidth limitation for data center optical interconnects
Intensity modulation with direct detection (IM/DD) provides a low-cost solution for data center
optical interconnects. To achieve higher data rate, Tomlinson-Harashima precoding (THP) is …
optical interconnects. To achieve higher data rate, Tomlinson-Harashima precoding (THP) is …
Advanced DSP enabled C-band 112 Gbit/s/λ PAM-4 transmissions with severe bandwidth-constraint
The performance of high-speed intensity modulation direct detection (IM-DD) transmissions
is severely degraded by the linear inter-symbol interference (ISI), due to both bandwidth …
is severely degraded by the linear inter-symbol interference (ISI), due to both bandwidth …
Digital pre-and post-equalization for C-band 112-Gb/s PAM4 short-reach transport systems
X Tang, Y Qiao, YW Chen, Y Lu… - Journal of Lightwave …, 2020 - opg.optica.org
Insufficient system bandwidth and chromatic dispersion (CD) of fiber are major limitations for
high-speed four-level pulse amplitude modulation (PAM4) direct detection systems. In this …
high-speed four-level pulse amplitude modulation (PAM4) direct detection systems. In this …
Gerchberg-Saxton based FIR filter for electronic dispersion compensation in IM/DD transmission Part I: Theory and simulation
AS Karar - Journal of Lightwave Technology, 2022 - ieeexplore.ieee.org
Intensity-modulation and direct-detection (IM/DD) transmission over short-reach optical fiber
links, require electronic dispersion compensation (EDC) at the transmitter and/or electronic …
links, require electronic dispersion compensation (EDC) at the transmitter and/or electronic …
Nonlinear Tomlinson-Harashima precoding for direct-detected double sideband PAM-4 transmission without dispersion compensation
In this paper, we propose a nonlinear Tomlinson-Harashima pre-coding (THP) scheme for
nonlinear distortion suppression in direct-detected double sideband (DSB) PAM-4 …
nonlinear distortion suppression in direct-detected double sideband (DSB) PAM-4 …
100G PAM-6 and PAM-8 signal transmission enabled by pre-chirping for 10-km intra-DCI utilizing MZM in C-band
In this paper, we experimentally demonstrate the transmission of 100G PAM-6 and PAM-8
signals for 10-km intra-data center interconnects (intra-DCI) in C-band, which is enabled by …
signals for 10-km intra-data center interconnects (intra-DCI) in C-band, which is enabled by …
Simplified THP and M-Log-MAP Decoder Based Faster Than Nyquist Signaling for Intra-Datacenter Interconnect
In this article, a joint application of simplified Tomlinson-Harashima precoding (THP) and M-
log-maximum a posteriori probability (M-log-MAP) decoder at transceivers is proposed for …
log-maximum a posteriori probability (M-log-MAP) decoder at transceivers is proposed for …