TY - JOUR
T1 - Direct color sensor, optical amplifier and demux device integrated on a single monolithic SiC photodetector
AU - Vieira, M.
AU - Louro, P.
AU - Vieira, M. A.
AU - Costa, J.
AU - Fernandes, M.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A pi'n/pin a-SiC:H voltage and optical bias controlled device is presented and its behavior as image and color sensor, optical amplifier and demux device is discussed. The design and the light source properties are correlated with the sensor output characteristics. Different readout techniques are used. When a low power monochromatic scanner readout the generated carriers the transducer recognizes a color pattern projected on it acting as a direct color and image sensor. Scan speeds up to 104 lines per second are achieved without degradation in the resolution. If the photocurrent generated by different monochromatic pulsed channels is readout directly, the information is demultiplexed. Results show that it is possible to decode the information from three simultaneous color channels without bit errors at bit rates per channel higher than 4000 bps. Finally, when triggered by light of appropriated wavelength, it can amplify or suppress the generated photocurrent working as an optical amplifier.
AB - A pi'n/pin a-SiC:H voltage and optical bias controlled device is presented and its behavior as image and color sensor, optical amplifier and demux device is discussed. The design and the light source properties are correlated with the sensor output characteristics. Different readout techniques are used. When a low power monochromatic scanner readout the generated carriers the transducer recognizes a color pattern projected on it acting as a direct color and image sensor. Scan speeds up to 104 lines per second are achieved without degradation in the resolution. If the photocurrent generated by different monochromatic pulsed channels is readout directly, the information is demultiplexed. Results show that it is possible to decode the information from three simultaneous color channels without bit errors at bit rates per channel higher than 4000 bps. Finally, when triggered by light of appropriated wavelength, it can amplify or suppress the generated photocurrent working as an optical amplifier.
KW - Electrical simulation
KW - Optical communications
KW - Optical sensors
KW - Wavelength division multiplexing-demultiplexing
UR - http://www.scopus.com/inward/record.url?scp=78650612214&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2010.09.090
DO - 10.1016/j.proeng.2010.09.090
M3 - Article
AN - SCOPUS:78650612214
SN - 1877-7058
VL - 5
SP - 232
EP - 235
JO - Procedia Engineering
JF - Procedia Engineering
ER -