Results 1 to 10 of about 176,830 (290)

An LDPC Encoder Architecture With Up to 47.5 Gbps Throughput for DVB-S2/S2X Standards

open access: yesIEEE Access, 2022
Low-Density Parity-Check (LDPC) code is a type of forward error-correction code with excellent performance, and has been widely used in many modern communication standards. The second-generation satellite broadcasting standard (DVB-S2) and its extension (
Decai Liu   +7 more
doaj   +1 more source

Optical network democratization [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
The current Internet infrastructure is not able to support independent evolution and innovation at physical and network layer functionalities, protocols and services, while at same time supporting the increasing bandwidth demands of evolving and heterogeneous applications. This paper addresses this problem by proposing a completely democratized optical
Reza Nejabati   +2 more
openaire   +4 more sources

Multilayer Optical Learning Networks [PDF]

open access: yesTopical Meeting on Optical Computing, 1987
In this paper we present a new approach to multilayer neural network learning which is based on holographically interconnected nonlinear Fabry-Perot etalons. The network can learn the interconnections that form a distributed representation of a desired pattern transformation operation.
Wagner, Kelvin, Psaltis, Demetri
openaire   +4 more sources

Key Technologies of Photonic Artificial Intelligence Chip Structure and Algorithm

open access: yesApplied Sciences, 2021
Artificial intelligence chips (AICs) are the intersection of integrated circuits and artificial intelligence (AI), involving structure design, algorithm analysis, chip fabrication and application scenarios.
Li Pei   +7 more
doaj   +1 more source

Manipulating Stimulated Brillouin Scattering Produced Gain Near Its Threshold via Slow Intensity Modulation

open access: yesIEEE Photonics Journal, 2021
Increasing the threshold of stimulated Brillouin scattering (SBS) by frequency and phase modulation is a productive approach to suppress SBS in optical fiber communications.
Peng Lei   +6 more
doaj   +1 more source

Monitoring of Fibre Optic Links With a Machine Learning-Assisted Low-Cost Polarimeter

open access: yesIEEE Access, 2020
The optical fibres widely used in telecommunication can be simultaneously used for (distributed) sensing or fibre network self-monitoring. In our work, we monitor changes in the fibre environment via monitoring changes in the state of light polarization ...
Martin Slapak   +3 more
doaj   +1 more source

Microcomb-based integrated photonic processing unit

open access: yesNature Communications, 2023
Optical neural networks face remarkable challenges in high-level integration and on-chip operation. In this work the authors enable optical convolution utilizing time-wavelength plane stretching approach on a microcomb-driven chip-based photonic ...
Bowen Bai   +13 more
doaj   +1 more source

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

open access: yesIEEE Access, 2022
In this paper, an (ONU-load and RTTs)-based (OLR) dynamic wavelength and bandwidth allocation (DWBA) algorithm for upstream channel in next-generational Ethernet passive optical network (NG-EPON) is proposed.
Jianqiang Hui   +3 more
doaj   +1 more source

Generation of the First-Order OAM Modes in Ring Fibers by Exerting Pressure Technology

open access: yesIEEE Photonics Journal, 2017
We have proposed an effective method of generating the first-order orbital angular momentum (OAM) modes in ring fibers. The first-order OAM modes (${\rm{L = \pm 1}}$ ) can be represented as the linear superposition of the ${\rm{HE}}_{{21}}^{{\rm{even}}}$
Yu Zhang   +9 more
doaj   +1 more source

Wavelength Reuse for Short-Reach Optical Access Network Utilizing MDM

open access: yesIEEE Photonics Journal, 2017
Wavelength reuse has been proposed as an effective solution to realize colorless optical network units (ONUs) for next-generation passive optical network with simplified maintenance and reduced cost.
Yuanxiang Chen   +9 more
doaj   +1 more source

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