Title :
Maximum optical dose detection with a 16*16 monolithic thyristor array
Author :
Kuijk, M. ; Heremans, P. ; Vounckx, R. ; Borghs, G.
Author_Institution :
Vrije Univ., Brussels, Belgium
fDate :
4/1/1992 12:00:00 AM
Abstract :
The authors report on the fabrication of a 2-D array (16*16) of optical thyristors connected into a winner-takes-all network with capability of spatially resolved maximum optical dose detection. In every pixel of the network, optical energy is integrated in time (during up to 1 ms) by means of precharging of the optoelectronic thyristors. At the moment of verdict, a voltage step is applied to the whole 256 element array. Only the element with the highest stored charge then switches on and holds off all other thyristors. A differential resolution of 80 pJ optical energy has been measured, while the time to take the appropriate decision is less than 150 ns.<>
Keywords :
integrated optoelectronics; optical switches; photoelectric devices; semiconductor switches; thyristors; 1 ns; 150 ns; 2D arrays; decision time; differential resolution; monolithic thyristor array; optical energy; optical switching; optical thyristors; optoelectronic thyristors; precharging; spatially resolved maximum optical dose detection; voltage step; winner-takes-all network; Energy resolution; Integrated optics; Optical arrays; Optical detectors; Optical device fabrication; Optical fiber networks; Optical switches; Spatial resolution; Thyristors; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
