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Advisor(s)
Abstract(s)
Characteristics of tunable wavelength pi'n/pin filters based on a-SiC:H multilayered stacked cells are studied both experimentally and theoretically. Results show that the device combines the demultiplexing operation with the simultaneous photodetection and self amplification of the signal. An algorithm to decode the multiplex signal is established. A capacitive active band-pass filter model is presented and supported by an electrical simulation of the state variable filter circuit. Experimental and simulated results show that the device acts as a state variable filter. It combines the properties of active high-pass and low-pass filter sections into a capacitive active band-pass filter using a changing capacitance to control the power delivered to the load.
Description
Keywords
Active Circuits a-SiC:H pi'n/pin optical filters Multiplexer/demultiplexer device Optoelectronic logic programming Optical sensors Optical receivers and transmitters Semiconductor device modeling
Citation
VIEIRA, Manuel A.; [et al] – Light-activated amplification in SiC Tandem devices: a capacitive active filter model. IEEE Sensors Journal. ISSN 1530-437X. Vol. 12, N.º 6 (2012), pp. 1755-1762.
Publisher
IEEE - INST Electrical Electronics Engineers INC