Recent advances in coherent optical communications for short-reach: Phase retrieval methods

AS Karar, ARE Falou, JMH Barakat, ZN Gürkan… - Photonics, 2023 - mdpi.com
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 …

High-speed optical fiber communication in China

J Yu, Y Wu - ACS Photonics, 2022 - ACS Publications
In the past decade, China has made great investments in studying photonics and
photocommunication with larger communication capacity, better performance, and lower …

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 …

C-band 100-GBaud PS-PAM-4 transmission over 50-km SSMF enabled by FIR-filter-based pre-electronic dispersion compensation

X Wu, J Zhang, APT Lau, C Lu - Optics Express, 2023 - opg.optica.org
Chromatic dispersion (CD) is always an obstacle to C-band high-speed intensity modulation
and direct detection (IM/DD) transmissions, especially with a fiber reach of> 20 km. To reach …

Parallel wavelength-division-multiplexed signal transmission and dispersion compensation enabled by soliton microcombs and microrings

Y Liu, H Zhang, J Liu, L Lu, J Du, Y Li, Z He… - Nature …, 2024 - nature.com
The proliferation of computation-intensive technologies has led to a significant rise in the
number of datacenters, posing challenges for high-speed and power-efficient datacenter …

Residual dispersion compensation photonic crystal fiber based on simulated annealing algorithm and Livelink data interaction

F Ma, P Li, W Shi - Optical Fiber Technology, 2023 - Elsevier
An octagonal photonic crystal fiber (O-PCF) structure with equal air hole diameter of the
cladding is proposed for residual dispersion compensation, and a high refractive index …

Electronic dispersion compensation and functional link neural network equalization for IM/DD links

Z Al Barakeh, AS Karar, R Ghandour, WHF Aly… - Optics …, 2023 - Elsevier
Short-reach fiber optical links employing intensity modulation (IM) at the transmitter (Tx) and
direct detection (DD) at the receiver (Rx), suffer from linear and nonlinear sources of …

Generation of high-speed PAM-4 signal with 3-bit DAC enabled by CRD-NS in optical interconnect

J Jiang, M Yin, D Yang, F Li - Optics Express, 2023 - opg.optica.org
In this paper, we experimentally demonstrated a 2-km high-speed optical interconnection
with pulse-shaped pre-equalized four-level pulse amplitude modulation (PAM-4) signal …

Probabilistically shaped PAM-8 transmission with simplified volterra equalizer

M Gao, M Liu, J Ke, B Chen - IEEE Photonics Journal, 2022 - ieeexplore.ieee.org
Intensity-modulation direct-detection (IM/DD) probabilistically shaped (PS) 8-level pulse-
amplitude modulation (PAM) signal is promising for high-speed intra-data-center networks …

[HTML][HTML] Comparison of post-equalizers for beyond 100-Gb/s/λ C-band signal transmission over a 100-km dispersion-uncompensated SSMF

X Wu, J Zhang, APT Lau, C Lu - Optics Communications, 2023 - Elsevier
A comprehensive comparison among different post-equalizers with relatively low complexity
is studied for C-band 100-km dispersion-uncompensated standard single-mode fiber …