Results 11 to 20 of about 23,973 (239)

Multicasting in WDM networks [PDF]

open access: yesIEEE Communications Surveys and Tutorials, 2002
Wavelength-division multiplexing (WDM) networks are believed to be a promising candidate to meet the explosive increase of bandwidth demand in the Internet. In this article, we survey the problems of and approaches to multicasting in WDM networks. In particular, we address the issues in the context of three types of WDM networks: broadcast-and-select ...
S -H Gary Chan
exaly   +3 more sources

WDM in Courses of Communication Technologies

open access: yesAdvances in Electrical and Electronic Engineering, 2008
This conference paper shows and demonstrates how modern technologies (such as WDM – Wavelength Division Multiplex) were introduced to students of Optical Networks lectured at Brno University of Technology, Faculty of Electrical Engineering and ...
Miloslav Filka, Miroslav Bernkopf
doaj   +2 more sources

Coexistence Demonstration and Wavelength Dependency Analysis of S-Band CV-QKD Signal with Fully Loaded C+L-Band DWDM Signals [PDF]

open access: yesEntropy
We demonstrated the coexistence of an S-band CV-QKD signal with fully loaded C+L-band classical signals for the first time. The secret key rate of the S-band QKD system was 986 kbps with the C+L-band WDM signals transmitted through a 20 km G.654.E fiber ...
Tetsuo Kawakami   +3 more
doaj   +2 more sources

Performance study of a coexistence system in a PON network taking into account the stimulated scattering of Raman [PDF]

open access: yesE3S Web of Conferences, 2022
Some problems introduced by the need for coexistence between a Passive Optical Network PON technologies (GPON, XGS-PON, and NG-PON2 in particular) especially the Stimulated Raman Scattering SRS which appears when different PON technologies transfer ...
Kherici Cheikh, Kandouci Malika
doaj   +1 more source

Research on Test Method and Test System of WDM Device for 5G Fronthaul Network

open access: yesGuangtongxin yanjiu, 2022
Wavelength Division Multiplexing (WDM) devices, as one of the core components of 5G fronthaul network, have developed rapidly in recent years. The fronthaul network has proposed new requirements for WDM devices, components and products.
Chun-lin HU, Zi-ting GUAN, Chun YANG
doaj   +3 more sources

Software Simulation FWM in WDM Optical Communication Systems [PDF]

open access: yesKirkuk Journal of Science, 2011
A serious issue for WDM systems is the presence of resonant four wave mixing (FWM) terms, as a result of interactions between different channels. FWM presents a major source of non-linear cross talk.
Sawsan A. Abdul- Majid
doaj   +1 more source

Research on Key Technologies of Single Carrier 800 Gbit/s Optical Transmission System

open access: yesGuangtongxin yanjiu, 2022
Wavelength Division Multiplexing (WDM) system has been evolving and upgrading in the direction of high speed, long distance and large capacity. In recent years, with the maturity of high-speed optoelectronic devices, the research and application of ...
Rui TANG   +3 more
doaj   +1 more source

WDM and Directed Star Arboricity [PDF]

open access: yesCombinatorics, Probability and Computing, 2010
A digraph is m-labelled if every arc is labelled by an integer in {1, . . ., m}. Motivated by wavelength assignment for multicasts in optical networks, we introduce and study n-fibre colourings of labelled digraphs. These are colourings of the arcs of D such that at each vertex v, and for each colour α, in(v, α) + out(v, α) ≤ n with in(v, α) the number
Amini, Omid   +3 more
openaire   +4 more sources

RESEARCH AND ANALYSIS INDICATORS FIBER-OPTIC COMMUNICATION LINES USING SPECTRAL TECHNOLOGIES

open access: yesСучасні інформаційні системи, 2022
The fiber-optic communication lines and fiber-optic transmission systems using fiber-optic cable, receiving and transmitting optical modules based on WDM and DWDM (Wavelength Division Multiplexing & Dense WDM) technologies are studied.
Elshan Hashimov   +2 more
doaj   +1 more source

SCM/WDM-PON Design based on Reflection Filter for Carrier Reuse

open access: yesGuangtongxin yanjiu, 2021
Carrier reuse technology is an important method to reduce the cost of Passive Optical Networks (PON) and multiplexing technology is the main method to improve the transmission capacity of PON. A PON system is designed in this paper.
Han DI   +3 more
doaj   +1 more source

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