Results 21 to 30 of about 1,738,862 (302)
Adaptive Coherent Receiver Settings for Optimum Channel Spacing in Gridless Optical Networks
Future Internet, 2019 In this paper, we propose a novel circuit and system to optimize the spacing between optical channels in gridless (also called flexible-grid or elastic) networking.
Ahmad Abdo +4 more
doaj +1 more source
Coherent Communication of Classical Messages [PDF]
Physical Review Letters, 2004 We define "coherent communication" in terms of a simple primitive, show it is equivalent to the ability to send a classical message with a unitary or isometric operation, and use it to relate other resources in quantum information theory. Using coherent communication, we are able to generalize super-dense coding to prepare arbitrary quantum states ...
openaire +4 more sources
Adaptive Pre/Post-Compensation of Cascade Filters in Coherent Optical Transponders
Future Internet, 2020 We propose an adaptive joint pre- and post-compensation to correct the filtering effects caused by cascading reconfigurable optical add drop multiplexers (ROADMs).
Ahmad Abdo, Claude D’Amours
doaj +1 more source
Rhythms for Cognition: Communication through Coherence [PDF]
Neuron, 2015 I propose that synchronization affects communication between neuronal groups. Gamma-band (30-90 Hz) synchronization modulates excitation rapidly enough that it escapes the following inhibition and activates postsynaptic neurons effectively. Synchronization also ensures that a presynaptic activation pattern arrives at postsynaptic neurons in a ...
openaire +5 more sources
Coherent optical communications using coherence-cloned Kerr soliton microcombs
Nature Communications, 2022 Kerr frequency combs are a promising laser source for future optical networks. The authors demonstrate coherence-cloning between two remote Kerr combs and improve optical coherent communication in terms of performance, power consumption, and simplicity.
Yong Geng +8 more
doaj +1 more source
Laser Frequency Combs for Coherent Optical Communications [PDF]
, 2018 Frequency combs can replace multiple lasers in WDM systems. We highlight performance requirements for frequency combs in coherent communications and present recent results using Kerr combs for multi-Tb/s transmission using advanced modulation ...
Fülöp, Attila, +3 more
core +1 more source
Applied Sciences, 2021 The Gram–Schmidt orthogonalization procedure (GSOP) and Löwdin symmetric orthogonalization procedure (SYOP) are the two mainstream algorithms for the compensation of phase mismatch in an imperfect optical 90° hybrid.
Xueliang Li +4 more
doaj +1 more source
Coherent fiber communications analyzer [PDF]
, 2012 This paper addresses an coherent fiber communication analyzer with digital signal processing (DSP). First we make an overview of the investigations that are being conducted at Instituto de Telecomunicações (IT) in the coherent communications area and ...
Ferreira, Ricardo M. +3 more
core +1 more source
Automatic Modulation Recognition in Coherent and Non-Coherent Terahertz Communications
IEEE Open Journal of the Communications SocietyTerahertz communications, enabled by photonics-based transceivers, offer ultra-wide bandwidths and support dynamic multi-rate transmission, making adaptive modulation and automatic modulation recognition (AMR) important capabilities for maintaining ...
Mariam Abdullah +6 more
doaj +1 more source
Clock Recovery Challenges in DSP-Based Coherent Single-Mode and Multi-Mode Optical Systems
Future Internet, 2018 We present an analysis of clock recovery algorithms in both polarization division multiplexing systems and mode division multiplexing systems. The impact of inter-polarization time skew and polarization mode dispersion in single-mode fibers, as well as ...
Júlio César Medeiros Diniz +2 more
doaj +1 more source