Camera pixel for coherent detection of modulated light

P. R. Dmochowski, B. R. Hayes-Gill, M. Clark, J. A. Crowe, Michael Geoffrey Somekh, S. P. Morgan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


A CMOS pixel with local processing suitable for use in a modulated light camera is described. The pixel was designed to detect sinusoidally modulated light within the frequency range of 500 kHz-25 MHz. It consists of a photodiode, a transimpedance amplifier, a mixer and an active 150 Hz bandpass filter. It is a prototype design capable of further size reduction suitable for tiling into an array for imaging purposes. This allows the modulated light component of a frequency far in excess of the frame rate to be detected at the pixel level.
Original languageEnglish
Pages (from-to)1403-1404
Number of pages2
JournalElectronics Letters
Issue number22
Publication statusPublished - 28 Oct 2004
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Camera pixel for coherent detection of modulated light'. Together they form a unique fingerprint.

Cite this