Results 21 to 30 of about 8,453,335 (366)

Maximizing the optical network capacity [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
Most of the digital data transmitted are carried by optical fibres, forming the great part of the national and international communication infrastructure. The information-carrying capacity of these networks has increased vastly over the past decades through the introduction of wavelength division multiplexing, advanced modulation formats, digital ...
Polina Bayvel   +7 more
openaire   +6 more sources

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

Frequency Stabilization of a Cesium Faraday Laser With a Double-Layer Vapor Cell as Frequency Reference

open access: yesIEEE Photonics Journal, 2022
We implement a compact optical frequency standard at the wavelength of 852 nm by the modulation transfer spectroscopy (MTS) technique, using a Faraday laser as the local oscillator and a double-layer cesium vapor cell to provide frequency reference.
Hangbo Shi   +5 more
doaj   +1 more source

The Optical RL-Gym: An open-source toolkit for applying reinforcement learning in optical networks

open access: yesInternational Conference on Transparent Optical Networks, 2020
Reinforcement Learning (RL) is leading to important breakthroughs in several areas (e.g., self-driving vehicles, robotics, and network automation). Part of its success is due to the existence of toolkits (e.g., OpenAI Gym) to implement standard RL tasks.
Carlos Natalino, P. Monti
semanticscholar   +1 more source

A Large Dataset to Train Convolutional Networks for Disparity, Optical Flow, and Scene Flow Estimation [PDF]

open access: yesComputer Vision and Pattern Recognition, 2015
Recent work has shown that optical flow estimation can be formulated as a supervised learning task and can be successfully solved with convolutional networks. Training of the so-called FlowNet was enabled by a large synthetically generated dataset.
N. Mayer   +6 more
semanticscholar   +1 more source

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   +7 more sources

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 (L = ±1) can be represented as the linear superposition of the HE21even mode and the HE21odd mode ...
Yu Zhang   +9 more
doaj   +1 more source

MDM-TDM PON Utilizing Self-Coherent Detection-Based OLT and RSOA-Based ONU for High Power Budget

open access: yesIEEE Photonics Journal, 2016
A cost-effective mode-division-multiplexing and time-division-multiplexing passive optical network (MDM-TDM PON) utilizing a self-coherent detection for upstream signal at optical line terminal (OLT) and a high-gain reflective semiconductor optical ...
Yuanxiang Chen   +11 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

Optical Axons for Electro-Optical Neural Networks [PDF]

open access: yesSensors, 2020
Recently, neuromorphic sensors, which convert analogue signals to spiking frequencies, have been reported for neurorobotics. In bio-inspired systems these sensors are connected to the main neural unit to perform post-processing of the sensor data. The performance of spiking neural networks has been improved using optical synapses, which offer parallel ...
Mircea Hulea   +4 more
openaire   +5 more sources

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