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Wyszukujesz frazę "Wavelength Division Multiplexing" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Relay-assisted WDM-FSO System: A Better Solution for Communication under Rain and Haze Weather Conditions
Autorzy:
Dayal, N.
Singh, P.
Kaur, P.
Powiązania:
https://bibliotekanauki.pl/articles/958123.pdf
Data publikacji:
2017
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Free Space Optics
Wavelength Division Multiplexing
Opis:
Among various conventional wireless communication systems, Free Space Optics (FSO) may be distinguished as well, which provides a good level security, high data rates, an enormous bandwidth and negligible susceptibility to electromagnetic interference. The main problem arises with unfavorable weather conditions, which affect the system’s parameters and require an aversion to other paths. The weather conditions discussed are rain and haze. Elimination of their adverse effects is essential for establishing a better communication system. The routing path is a major issue, as its decreased parameters lead to the diversion of the transmitted signal or to its total loss. In this article, increased system path length and proficiency levels are demonstrated by using relays, which are assisted by Wavelength Division Multiplexing (WDM).
Źródło:
Journal of Telecommunications and Information Technology; 2017, 4; 54-59
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of the SOA Deep Saturation and Power Averaging Effect to Counteract Intra-Channel Crosstalk in DWDM System
Autorzy:
Dyc, F. M.
Mazurek, P.
Turkiewicz, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/308974.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cross-gain modulation
Dense Wavelength Division Multiplexing
Semiconductor Optical Amplifier
Opis:
The Semiconductor Optical Amplifier (SOA) is a key component of cost-effective short/medium range transmission systems. However it can introduce signal distortions. In this paper the authors investigate the possibility to reduce the signal distortions in SOA operating with the multiple wavelength channels. Using numerical simulations the negative influence of the nonlinear effects, namely cross-gain modulation (XGM) and the patterning effect can be reduced in deep SOA saturation regime. The self-healing effect is pronounced for the 4 or more wavelength channels and the transmitted symbol length longer than double of the SOA recovery time.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 2; 22-28
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The present and future of nonlinear optics applications in photonic telecommunication networks
Autorzy:
Marciniak, M.
Kowalewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/308711.pdf
Data publikacji:
2000
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
optical fibre communications
photonic networks
wavelength-division multiplexing
nonlinear optical phenomena
Opis:
A state-of-the art of photonic telecommunication technology is reviewed and possible directions of future developments are outlined. In particular, the impact of nonlinear optical phenomena inherent to silica glass on the transmission performance of wavelength-division multiplexed optical signal through fibres is discussed. Also potential applications of nonlinear photonic devices for the purposes of optical signal processing that is foreseen in future all-optical networks are pointed out.
Źródło:
Journal of Telecommunications and Information Technology; 2000, 1-2; 3-5
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
100/1000 Gbit/s Ethernet and beyond
Autorzy:
Marciniak, M.
Powiązania:
https://bibliotekanauki.pl/articles/308819.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
converged networks
dense wavelength division multiplexing
high-speed Ethernet
optical networking
transparent optical networks
Opis:
100 Gbit/s Ethernet is foreseen in metro and access by 2014, while 1 Tbit/s Ethernet is forecasted for trunk links before 1020. This paper reviews the advantages and constraints of the optical networking and discusses how they meet the 100 Gbit/s Ethernet needs.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 1; 14-19
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
RoFnet - Reconfigurable Radio over Fiber Network Architecture Overview
Autorzy:
Medeiros, M.
Avó, R.
Laurencio, P.
Correia, N.
Barradas, A.
Powiązania:
https://bibliotekanauki.pl/articles/308954.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
optical access networks
optical single sideband
radio over fiber
reflective semiconductor optical amplifiers
wavelength division multiplexing
Opis:
This paper introduces the basic operational concepts of the RoFnet - reconfigurable radio over fiber network, which is a project supported by the Portuguese Foundation forScience and Technology. This project proposes an innovative radio over fiber optical access network architecture, which combines a low cost base station (BS) design, incorporating reflective semiconductor optical amplifiers, with fiber dispersion mitigation provided by optical single sideband modulation techniques. Optical wavelength division multiplexing (WDM) techniques are used to simplify the access network architecture allowing for different BSs to be fed by a common fiber. Different wavelength channels can be allocated to different BSs depending on user requirements. Additionally, in order to improve radio coverage within a cell, it is considered a sectorized antenna interface. The combination of subcarrier multiplexing with WDM, further simplifies the network architecture, by using a specific wavelength channel to feed an individual BS and different subcarriers to drive the individual antenna sectors within the BS.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 1; 38-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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