Autor: Galwas, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of optical-microwave mixing process in electro-optical modulators
Autorzy:: Galwas, B.A.
Szczepaniak, Z.R.
Powiązania:: https://bibliotekanauki.pl/articles/308368.pdf
Data publikacji:: 2001
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electro-optical modulator
nonlinear effects
microwave-optical mixing
Opis:: The principle of operation and the general parameters of the electro-optical Mach-Zehnder modulators are reminded in the paper. With the use of the mathematical relationships describing the transmission of the optical signal through the modulator, the theoretical model of the optical signal transmission with two modulating signals at two frequencies will be presented. The theoretical relationships describing the efficiency of the optical-microwave mixing and frequency multiplying in the two-tone operation will be derived. The analysis and the simulations will be performed for different operating points, where the nonlinearity of the transmission characteristic is specially strong.
Źródło:: Journal of Telecommunications and Information Technology; 2001, 2; 57-63
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Photo-devices for optical controlling of microwave circuits
Autorzy:: Szczepaniak, Z.R.
Galwas, B.A.
Powiązania:: https://bibliotekanauki.pl/articles/309090.pdf
Data publikacji:: 2001
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: microwave optoelectronic switch
photodiode
phototransistor
Opis:: The most important optical devices which can be used for controlling microwave circuits will be presented in the paper. The performance and the parameters of the devices such as semiconductor microwave optoelectronic switches, photodiodes and phototransistors were described. The influence of the optical illumination on their microwave parameters will be described in details, including the our own investigations and simulations results. Several applications of such devices and their potential possibilities will be presented.
Źródło:: Journal of Telecommunications and Information Technology; 2001, 3; 86-94
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: New multimedia and telematic tools for asynchronous distance learning
Autorzy:: Chęć, J.
Pajer, M.
Galwas, B.A.
Powiązania:: https://bibliotekanauki.pl/articles/308161.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: Internet
multimedia
open and distance learning
compact disc
e-mail
Opis:: New tools of modern education, connected mainly with Internet, are described in the paper. Their characteristics, principles of application were discussed in succession. Evaluation trail of their usefulness was done. Possibilities of carrying on laboratory experiments and distance designing were described. Probe to foresee directions of further development of Internet tools in the educational process was done.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 1; 65-70
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Model of e-book for distance-learning courses
Autorzy:: Galwas, B.A.
Pajer, M.
Chęć, J.
Powiązania:: https://bibliotekanauki.pl/articles/308372.pdf
Data publikacji:: 2001
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: open and distance learning
continuing education
multimedia
compact disc
Opis:: Structure of electronic book, prepared as auxiliary materials of courses for specialists in the field of telecommunications and informatics, will be described. Assumptions undertaken and their grounds will be presented. Model of a single lecture, way of a control of student progress and technique of movement through the course content will be described.
Źródło:: Journal of Telecommunications and Information Technology; 2001, 2; 46-50
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Optical-microwave transmission system with subcarrier multiplexing for industrial measurement systems
Autorzy:: Dawidczyk, J.
Galwas, B.A.
Skulski, J.
Szczepaniak, Z.
Gruchała, H.
Malyshev, S.
Powiązania:: https://bibliotekanauki.pl/articles/308142.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: optical-microwave link
subcarrier multiplexing
Opis:: We describe short-distance three-channel optical-microwave link with subcarrier multiplexing for transmission digital and/or analog data between different points of industrial measurement systems. The optical fiber link operates with Fabry-Perot laser at 1300 nm, multimode, fiber and PIN photodiode receiver. From microwave point of view three carriers with frequencies 600 MHz, 800 MHz and 1000 MHz were chosen. The structure and main parameters of a link are reported and discussed.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 1; 18-21
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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