Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2849
Título: Integrated photonic filters based on SiC multilayer structures
Autor: Vieira, Manuel Augusto
Vieira, Maria Manuela Almeida Carvalho
Louro, Paula
Silva, Vítor
Fantoni, Alessandro
Palavras-chave: SiC heterostructures
Optical sensors
Optical active filters
Numerical and electrical simulations
Optoelectronic model
Data: 15-Jun-2013
Editora: Elsevier Science BV
Citação: VIEIRA, M. A.; VIEIRA, M.; LOURO, P.; SILVA, V.; FANTONI, A. - Integrated photonic filters based on SiC multilayer structures. Applied Surface Science. ISSN 0169-4332. Vol. 275 (2013), p. 185-192.
Resumo: Combined tunable WDM converters based on SiC multilayer photonic active filters are analyzed. The operation combines the properties of active long-pass and short-pass wavelength filter sections into a capacitive active band-pass filter. The sensor element is a multilayered heterostructure produced by PE-CVD. The configuration includes two stacked SiC p-i-n structures sandwiched between two transparent contacts. Transfer function characteristics are studied both theoretically and experimentally. Results show that optical bias activated photonic device combines the demultiplexing operation with the simultaneous photodetection and self amplification of an optical signal acting the device as an integrated photonic filter in the visible range. Depending on the wavelength of the external background and irradiation side, the device acts either as a short- or a long-pass band filter or as a band-stop filter. The output waveform presents a nonlinear amplitude-dependent response to the wavelengths of the input channels. A numerical simulation and a two building-blocks active circuit are presented and give insight into the physics of the device. (c) 2013 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2849
ISSN: 0169-4332
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Artigos

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