Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Istvan Frigyes"'
Autor:
Andrea Farkasvolgyi, Istvan Frigyes
Publikováno v:
Infocommunications journal. :9-13
This paper presents the possibilities of Free-space optical connection (FSO) in space communication in case of satellite-to-spacecraft or satellite-to-satellite link. It summerizes the advantages and disadvantages of optical transmissions in case of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::337ea82471d00a125fe01c77a5615d85
https://doi.org/10.36244/icj.2018.3.2
https://doi.org/10.36244/icj.2018.3.2
Autor:
Andrea Farkasvolgyi, Istvan Frigyes
Publikováno v:
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring).
This article presents a comparison of modulation techniques applicable to deep-space optical communication. We assume a gamma-gamma distributed signal at the near-earth phase of long-range links, which can be correctly used in the case of strong, mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d90d183d958e9ad0ec630e6cf2770798
https://doi.org/10.1109/piers-spring46901.2019.9017305
https://doi.org/10.1109/piers-spring46901.2019.9017305
Autor:
Istvan Frigyes, Andrea Farkasvolgyi
Publikováno v:
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring).
Our investigations primarily focus on the effect of turbulent optical media on channel parameters in multi-connection satellite system. We examined optical systems with the smallest size of optical units. In these systems, the optical lens diameter a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::515e3c42095647de91a54801e0270852
https://doi.org/10.1109/piers-spring46901.2019.9017666
https://doi.org/10.1109/piers-spring46901.2019.9017666
Publikováno v:
Acta Physica Hungarica B) Quantum Electronics. 23:175-186
Sinusoidally modulated optical signal transmission is experimentally investigated over a 30 km standard single-mode fiber using a range of optical input powers. Experiments and computer simulations showed that fiber-induced self-phase modulation gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b0ea0e29285f9d4156fccbf78bd27a6
https://doi.org/10.1556/aph.23.2005.3-4.7
https://doi.org/10.1556/aph.23.2005.3-4.7
Autor:
Otto Schwelb, Istvan Frigyes
Publikováno v:
Microwave and Optical Technology Letters. 44:536-540
A periodic bandpass filter that is based on the phase-matching principle and consists of several parallel-coupled microrings is presented. The rings are identical in size; the coupling coefficients are chosen to provide maximally flat or equal ripple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8d4195418fb556b7c851650b09ac147
https://doi.org/10.1002/mop.20689
https://doi.org/10.1002/mop.20689
Autor:
Istvan Frigyes, Peter Horvath
Publikováno v:
International Journal of Wireless Information Networks. 11:217-225
In the usual application of Multiple-Input, Multiple-Output (MIMO) and space–time coding (STC) the basis of the operation is a rich-scattering fading channel and a high density of links. In this paper a different situation: cellular millimeter-wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a02a89306e8d9778270e872ba2274751
https://doi.org/10.1007/s10776-004-1233-2
https://doi.org/10.1007/s10776-004-1233-2
Autor:
Istvan Frigyes, Otto Schwelb
Publikováno v:
Microwave and Optical Technology Letters. 42:427-432
The network employed in this study consists of one input and one output; the input is related to the information including the total input power. The output of the network is the power level of IMD3. The input layer has one neuron, since there is onl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66548227124283965ccd2833e809b051
https://doi.org/10.1002/mop.20326
https://doi.org/10.1002/mop.20326
Publikováno v:
Optics Communications. 226:211-220
We present an optical heterodyne acousto-optic delay line performing true-time delay of microwave pulses based on the direct practical realization of the time shifting possibility embedded in the Fourier transformation of the differentially phase shi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17bca20cc6c115e84c46fd20b51d49cf
https://doi.org/10.1016/j.optcom.2003.09.004
https://doi.org/10.1016/j.optcom.2003.09.004
Autor:
Istvan Frigyes, Otto Schwelb
Publikováno v:
Microwave and Optical Technology Letters. 39:257-261
Nonsymmetric Vernier type series-coupled optical microring filters have been found to be free of the spurious responses that commonly occur in those of symmetric design. Large free spectral range (FSR) is ob- tained without significant decrease of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::081492a63f2cb117147b4e4377b47602
https://doi.org/10.1002/mop.11185
https://doi.org/10.1002/mop.11185
Autor:
Otto Schwelb, Istvan Frigyes
Publikováno v:
Microwave and Optical Technology Letters. 38:125-129
Interaction between the circulating waves in microrings and the connecting busbars provides two parallel-coupled microrings with filter characteristics that feature a stopband with uniformly large rejection and high finesse. Performance degradation d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::542045db70a4f51aa724c701342608f4
https://doi.org/10.1002/mop.10992
https://doi.org/10.1002/mop.10992