Author(s):
Vieira, Manuel ; Vieira, Manuela ; Louro, Paula ; Vaz da Silva, V ; Fantoni, Alessandro
Date: 2013
Persistent ID: http://hdl.handle.net/10400.21/2849
Origin: Repositório Científico do Instituto Politécnico de Lisboa
Subject(s): SiC heterostructures; Optical sensors; Optical active filters; Numerical and electrical simulations; Optoelectronic model; SiC heterostructures; SiC heterostructures; Optical sensors; Optical sensors; Optical active filters; Optical active filters; Numerical and electrical simulations; Numerical and electrical simulations; Optoelectronic model; Optoelectronic model
Description
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.
