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Orientador(es)
Resumo(s)
WDM multilayered SiC/Si devices based on a-Si:H and a-SiC:H filter design are approached from a reconfigurable point of view. Results show that the devices, under appropriated optical bias, act as reconfigurable active filters that allow optical switching and optoelectronic logic functions development. Under front violet irradiation the magnitude of the red and green channels are amplified and the blue and violet reduced. Violet back irradiation cuts the red channel, slightly influences the magnitude of the green and blue ones and strongly amplifies de violet channel. This nonlinearity provides the possibility for selective removal of useless wavelengths. Particular attention is given to the amplification coefficient weights, which allow taking into account the wavelength background effects when a band needs to be filtered from a wider range of mixed signals, or when optical active filter gates are used to select and filter input signals to specific output ports in WDM communication systems. A truth table of an encoder that performs 8-to-1 multiplexer (MUX) function is presented.
Descrição
Palavras-chave
Optoelectronic logic functions Reconfigurable devices Numerical simulation Transfer characteristics Coder-encoder devices Encoder truth tables
Contexto Educativo
Citação
VIEIRA, Manuel A.; [et al] – Optoelectronic logic functions based on reconfigurable SiC multilayer devices. In 4th IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS. IFIP Advances in Information and Communication Technology, 2013. Costa da Caparica, Portugal: Springer, 2013. ISBN 978-642-37290-2. Vol. 394. Pp. 539-546.
Editora
Springer-Verlag Berlin