Title :
Integration of a photodiode array and centroid processing on a single CMOS chip for a real-time shack-Hartmann wavefront sensor
Author :
Pui, Boon Hean ; Hayes-Gill, Barrie ; Clark, Matthew ; Somekh, Mike G. ; See, Chung Wah ; Morgan, Steve ; Ng, Alan
Author_Institution :
VLSI Design Group, Univ. of Nottingham, UK
Abstract :
A real-time VLSI optical centroid processor has been developed as part of a larger Shack-Hartmann wavefront sensor system for applications in adaptive optics. The implementation of the optical centroid detection system was demonstrated successfully using a hardware emulation system. Subsequently, the design has been implemented as a CMOS single-chip solution. This has advantages in terms of speed, power consumption, system size, and cost. The design of the different components of the system will be discussed along with test results of the fabricated device.
Keywords :
CMOS integrated circuits; VLSI; adaptive optics; field programmable gate arrays; integrated optoelectronics; photodetectors; photodiodes; CMOS integrated circuit; CMOS single-chip solution; VLSI optical centroid processor; active pixel; adaptive optics; centroid processing; field programmable gate array; hardware emulation system; integrated detector; optical centroid detection system; photodiode array; real-time Shack-Hartmann wavefront sensor; single CMOS chip; Adaptive optics; CMOS process; Hardware; Optical detectors; Optical sensors; Photodiodes; Real time systems; Sensor arrays; Sensor systems; Very large scale integration; 65; Active pixel; CMOS IC; FPGA; centroid detection; field programmable gate array; integrated detector; photodiodes; wavefront sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2004.837494
