Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2800
Título: Reconfigurable SiC Embedded Photonic Structures with Self Optical Bias Control
Autor: Vieira, Maria Manuela Almeida Carvalho
Vieira, Manuel Augusto
Louro, Paula
Fantoni, Alessandro
Silva, Vítor
Palavras-chave: Photonic active filters
Reconfigurable devices
Numerical simulation
Transfer function characteristics
Encoder-decoder devices
Data: Mar-2013
Editora: Springer
Citação: VIEIRA, M.; VIEIRA, M. A.; LOURO, P.; FANTONI, A.; SILVA, V. - Reconfigurable SiC Embedded Photonic Structures with Self Optical Bias Control. Plasmonics. ISSN 1557-1955. Vol. 8, nr 1 (2013), p. 45-51.
Resumo: Multilayered heterostructures based on embedded a-Si:H and a-SiC:H p-i-n filters are analyzed from differential voltage design perspective using short- and long-pass filters. The transfer functions characteristics are presented. A numerical simulation is presented to explain the filtering properties of the photonic devices. Several monochromatic pulsed lights, separately (input channels) or in a polychromatic mixture (multiplexed signal) at different bit rates, illuminated the device. Steady-state optical bias is superimposed from the front and the back side. Results show that depending on the wavelength of the external background and impinging side, the device acts either as a short- or a long-pass band filter or as a band-stop filter. Particular attention is given to the amplification coefficient weights, which allow to take into account the wavelength background effects when a band or frequency needs to be filtered or the gate switch, in which optical active filter gates are used to select and filter input signals to specific output ports in wavelength division multiplexing (WDM) communication systems. This nonlinearity provides the possibility for selective removal or addition of wavelengths. A truth table of an encoder that performs 8-to-1 MUX function exemplifies the optoelectronic conversion.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2800
ISSN: 1557-1955
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Comunicações

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