Results 51 to 60 of about 5,993 (258)

OSNR Monitoring for NRZ-PSK Signals Using Silicon Waveguide Two-Photon Absorption

open access: yesIEEE Photonics Journal, 2011
We study the use of two-photon absorption (TPA) in a silicon optical waveguide for measuring the optical signal-to-noise ratio (OSNR) of a nonreturn to zero phase-shift keying (NRZ-PSK) signal.
Ke Xu   +7 more
doaj   +1 more source

Considering Transmission Impairments in Wavelength Routed Networks [PDF]

open access: yes, 2005
— We consider dynamically reconfigurable wavelength routed networks in which lightpaths carrying IP traffic are on demand established. We face the Routing and Wavelength Assignment problem considering as constraints the physical impairments that arise in
Cardillo, R.   +2 more
core   +2 more sources

All-optical 2R regeneration using the hysteresis in a distributed feedback laser diode [PDF]

open access: yes, 2010
A broadband optical 2R regenerator based on a single distributed feedback laser is demonstrated for nonreturn to zero signals at a bitrate of 10 Gb/s. A semi-analytical approach for the influence of hysteresis on the transfer function of a 2R regenerator
Baets, Roel   +5 more
core   +2 more sources

Design and performance evaluation of PEA IP over DWDM core networks

open access: yesEngineering and Applied Science Research, 2019
This work demonstrates the design and performance evaluation of an IP over DWDM Network of the PEA (Provincial Electricity Authority) in the stage of the transforming from a conventional network to a full DWDM.
Chaowarit Boonta   +2 more
doaj   +1 more source

Optical Network Virtualisation using Multi-technology Monitoring and SDN-enabled Optical Transceiver [PDF]

open access: yes, 2018
We introduce the real-time multi-technology transport layer monitoring to facilitate the coordinated virtualisation of optical and Ethernet networks supported by optical virtualise-able transceivers (V-BVT).
Aguado, Alejandro   +5 more
core   +3 more sources

Optical Performance Monitoring Technology of IMDD System based on Deep Neural Network

open access: yesGuangtongxin yanjiu, 2023
In advanced high-speed fiber optic communication systems, due to the introduction of dense wavelength division multiplexing technology, the signal spectral interval is getting narrower and narrower, and the traditional out-of-band Optical Signal-to-Noise
LIU Jun   +8 more
doaj  

A Density Clustering Algorithm for Simultaneous Modulation Format Identification and OSNR Estimation

open access: yesApplied Sciences, 2020
In this work, we propose a combined method to implement both modulation format identification (MFI) and optical signal-to-noise ratio (OSNR) estimation, a method based on density-based spatial clustering of applications with a noise (DBSCAN) algorithm ...
Zhao Zhao   +3 more
doaj   +1 more source

HeCSON: Heuristic for Configuration Selectionin Optical Network Planning

open access: yes, 2020
We present a transceiver configuration selection heuristic combining Enhanced Gaussian Noise (EGN) models, which shows a 40\% increase in throughput and 87\% decrease in execution time, compared to only approximate EGN and Full-Form EGN ...
Autenrieth, Achim   +4 more
core   +1 more source

Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop [PDF]

open access: yes, 2005
Optical transmission systems based on homodyne coherent detection of 2-ASK and pilot carrier 2-PSK signals have been implemented. ASK data has been transmitted at 2.5 Gbps, while 2.5 Gbps and 10 Gbps PSK systems have been tested.
Camatel, S., Ferrero, Valter
core   +2 more sources

A Joint OSNR and Nonlinear Distortions Estimation Method for Optical Fiber Transmission System

open access: yesIEEE Photonics Journal, 2018
In this paper, we propose and demonstrate a joint optical signal-to-noise ratio (OSNR) and a nonlinear distortions estimation method. The OSNR is calculated by considering either the link parameters or the correlation operations of the training symbols ...
Yating Xiang   +6 more
doaj   +1 more source

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