Temat: optical communications - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Impact of nonlinear optical phenomena on dense wavelength division multiplexed transmission in fibre telecommunication systems
Autorzy:: Szczęsny, W.
Marciniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/308745.pdf
Data publikacji:: 2000
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: optical communications
WDM systems
nonlinear transmission
Opis:: In the paper results of analysis of nonlinear phenomena in optical fibres: Self-Phase Modulation, Cross-Phase Modulation, Four-Wave Mixing and Stimulated Raman Scattering and their influence on Dense-Wavelength Division Multiplexed system performance are reported. Different nonuniform optical channel allocation schemes based on ITU Recommendation G.692 100 GHz frequency grid are compared with uniform channel distribution. The level of nonlinear cross-talk is determined for different levels of the total optical power. As an example a 10 Gbit/s D-WDM dispersion-shifted single mode fibre link with dispersion-compensating fibres is envisaged. The directions for optimization of the system design in view of actual international standardization trends are pointed out.
Źródło:: Journal of Telecommunications and Information Technology; 2000, 1-2; 61-65
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Power penalty caused by Stimulated Raman Scattering in WDM Systems
Autorzy:: Pietrzyk, S.
Szczęsny, W.
Marciniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/308751.pdf
Data publikacji:: 2000
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: optical communications
WDM systems
Stimulated Raman Scattering
Opis:: In this paper we present results of an investigation into the power penalty introduced by Stimulated Raman Scattering (SRS) in WDM systems with concentration on application of dispersion-shifted single-mode optical fibres (G.653) and unequal channel allocation schemes. System parameters based on ITU-T Recommendation G.692 and analytic formulas were used in calculations. It is shown that SRS does present a practical limitation to the multichannel systems. We also indicate limitations of the G.692 Recommendation and we point at directions of study in the area of nonlinear phenomena and multichannel systems.
Źródło:: Journal of Telecommunications and Information Technology; 2000, 1-2; 52-58
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Recent advances in PBG structures
Autorzy:: Vorgul, I.Yu.
Marciniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/308757.pdf
Data publikacji:: 2000
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: photonic band gap
photonic crystals
optical communications
Opis:: We propose a review of word science achievements in the extremely extended for the recent few years field of photonic band gap structures The review concerns both theoretical and experimental investigations on PBG structures toward fabrication of the most optimal ones for different applications. The attention is given to the obtained results as well as to the used and developed methods.
Źródło:: Journal of Telecommunications and Information Technology; 2000, 1-2; 71-76
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analog-based duobinary-4-PAM for electrical bandwidth limited optical fiber links
Autorzy:: Suhr, L.F.
Madsen, P.
Monroy, I. T.
Olmos, J. J. V.
Powiązania:: https://bibliotekanauki.pl/articles/173933.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: optical communications
advanced modulation formats
multilevel modulation
Opis:: This paper presents a demonstration of a seven level duobinary-4-PAM signal operating at 10.16 Gbit/s. The polybinary generation is achieved by a simple electrical Bessel filter of 5th order, with a frequency cut-off of 1.8 GHz. We assess the impact of the filter placement, either at the transmitter or the receiver, and find the impact is minimal in terms of bit error rate performance in transmissions of up to 40 km of single mode fiber.
Źródło:: Optica Applicata; 2016, 46, 1; 71-78
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Transmitter Inclination Angle Characteristics for Underwater Optical Wireless Communication in a Variety of APD Detectors
Autorzy:: Mazin, Ali A. Ali
Powiązania:: https://bibliotekanauki.pl/articles/1192197.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Communications
Underwater Optical Communications
Avalanche Photodiode
Bit Error Rate
Channel Capacity
Opis:: In this paper, the performance of an underwater optical wireless communications system is theoretically analyzed, using 4-PPM modulation technique and an avalanche photodiodes APD receiver over underwater environment channels. Based on the line of sight (LOS) geometrical model for optical beam propagation horizontally on an underwater medium and combined with signal to noise ratio model for Si, Ge and InGaAs APD and BER; then the impacts of the distance of transmission, power of the transmitter under Jerlov water types (I, IA, IB) are analyzed. The characteristics of bit error rate BER and channel capacity for 4-PPM optical modulation technique are studied under different APD detector and Jerlov water types. Simulation results indicate that the performance of PPM and Jerlov type (I) are more suited for an underwater optical wireless communication. On the other hand, we discuss the suitability of avalanche photodiodes under this modulation technique, where the photodiode Si APD has more advantage compared with the other detectors when used as a receiver in an underwater optical communication.
Źródło:: World Scientific News; 2016, 45, 2; 355-372
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Analysis of Free-Space Optics Development
Autorzy:: Mikołajczyk, J.
Bielecki, Z.
Bugajski, M.
Piotrowski, J.
Wojtas, J.
Gawron, W.
Szabra, D.
Prokopiuk, A.
Powiązania:: https://bibliotekanauki.pl/articles/221245.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: optical communications
open path laser communications
line of sight communications
free space optics
Opis:: The article presents state of work in technology of free-space optical communications (Free Space Optics - FSO). Both commercially available optical data links and their further development are described. The main elements and operation limiting factors of FSO systems have been identified. Additionally, analyses of FSO/RF hybrid systems application are included. The main aspects of LasBITer project related to such hybrid technology for security and defence applications are presented.
Źródło:: Metrology and Measurement Systems; 2017, 24, 4; 653-674
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Characterization of sub-channel based Málaga atmospheric optical links with real β parameter
Autorzy:: López-González, F. J.
Jurado-Navas, A.
Garrido-Balsells, J. M.
Castillo-Vázquez, M.
Puerta-Notario, A.
Powiązania:: https://bibliotekanauki.pl/articles/174807.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: Malaga distribution
generalized-K distribution
atmospheric optical communications
atmospheric propagation
atmospheric turbulence
scintillation
Opis:: A generalization of the Málaga atmospheric optical communications links treated as a finite number of generalized-K distributed sub-channels is analyzed in terms of outage probability and outage rate when its β parameter belongs to the set of real numbers. To the best of the author’s knowledge, this is the first time that β ∈ ℜ is considered. The new analytical expressions derived in this paper lead to a new physical and more realistic interpretation of atmospheric optical links, especially in terms of performance.
Źródło:: Optica Applicata; 2017, 47, 4; 545-556
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

Tytuł:: Peak detection unit for Free-Space-Optics receiver
Autorzy:: Achtenberg, Krzysztof
Mikołajczyk, Janusz
Szabra, Dariusz
Prokopiuk, Artur
Bielecki, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/221334.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: peak detection
infrared receiver module for optical communications
open path laser communications
free space optics
quantum cascade laser
Opis:: The paper presents verification of a peak detection method cooperating with infrared radiation detector module applications. The work has been divided into parts including SPICE simulations and presentation of results obtained with the constructed prototype. The design of the peak detector dedicated to applications with very short pulses requires a different approach than that for standard solutions. It is mainly caused due to the ratio of pulse width and time period. In the described application this ratio is less than 10%. The paper shows testing of an analogue circuit which is capable to be inserted in these applications.
Źródło:: Metrology and Measurement Systems; 2019, 26, 2; 377-385
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Transmitter with quantum cascade laser for free space optics communication system
Autorzy:: Gutowska, M.
Pierścińska, D.
Nowakowski, M.
Pierciński, K.
Szabra, D.
Mikołajczyk, J.
Wojtas, J.
Bielecki, Z.
Powiązania:: https://bibliotekanauki.pl/articles/200097.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: optical link
quantum cascade laser
laser communications
Opis:: The paper presents results of experimental tests of the quantum cascade laser from Alpes Lasers company in terms of its application in the optic communication system in an open space. The measurements involved the current – voltage characteristics while measuring also the average power of emitted radiation, and spectral characteristics for different temperatures and different laser pulse durations. The duration of laser pulses was matched to parameters used in telecommunication interfaces. The construction of the transmitter module which uses the tested laser is also presented.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 419-423
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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