The design and characterisation of an optical VLSI processor for real time centroid detection

Boon Hean Pui, Barrie Hayes-Gill, Matt Clark, Michael Geoffrey Somekh, Chung See, Jean François Piéri, Steve P. Morgan, Alan Ng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)


The integration of photo-detectors onto a standard CMOS integrated circuit is presented. This device provides the optical front end for a real time centroid detection system to be used as part of a larger system for implementing a Shack-Hartmann wavefront sensor. A hardware emulation system containing a Field Programmable Gate Array is used to prototype suitable algorithms prior to IC fabrication. Data is presented on the performance of photodetectors and the ability to extract in real time a centroid coordinate.
Original languageEnglish
Pages (from-to)67-75
Number of pages9
JournalAnalog Integrated Circuits and Signal Processing
Issue number1
Publication statusPublished - 1 Jul 2002
Externally publishedYes


  • Active pixel
  • Centroid detection
  • FPGA
  • Integrated detector
  • Photodiodes
  • Wavefront sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Signal Processing

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