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Orientador(es)
Resumo(s)
Results on the use of a double a-SiC:H p-i-n heterostructure for signal multiplexing and demultiplexing applications in the visible range are presented. Pulsed monochromatic beams together (multiplexing mode), or a single polychromatic beam (demultiplexing mode) impinge on the device and are absorbed, accordingly to their wavelength. Red, green and blue pulsed input channels are transmitted together, each one with a specific transmission rate. The combined optical signal is analyzed by reading out, under different applied voltages, the generated photocurrent. Results show that in the multiplexing mode the output signal is balanced by the wavelength and transmission rate of each input channel, keeping the memory of the incoming optical carriers. In the demultiplexing mode the photocurrent is controlled by the applied voltage allowing regaining the transmitted information. A physical model supported by a numerical simulation gives insight into the device operation.
Descrição
Palavras-chave
Optical devices a-SiC heterostructures Optical communication Multiplexing and demultiplexing applications over POF
Contexto Educativo
Citação
VIEIRA, Manuela; [et al] – New stacked photodevices for signal multiplexing and demultiplexing applications in the visible spectrum. In 2009 6th Internal Multi-Conference on Systems, Signals and Devices. Djerba, Tunisia: IEEE, 2009. ISBN 978-1-4244-4345-1. Vol. 1-2. Pp. 869-874.
Editora
IEEE