Title :
Variable time synchronous detection method for sensitive optical detection
Author :
Pittet, P. ; Lu, G.N. ; Pitaval, M.
Author_Institution :
Lab. d´´Electronique, Univ. Claude Bernard Lyon, Villeurbanne, France
fDate :
5/29/2003 12:00:00 AM
Abstract :
A variable-time synchronous detection (VTSD) method for sensitive optical detection is proposed. It is based on a voltage/time duality concept, and provides optimised sensitivity and dynamic range. Testing results on a VTSD board show a minimum detectable photocurrent of 30 fA and a self-adaptable dynamic range of 180 dB.
Keywords :
optical signal detection; photodetectors; 30 fA; dynamic range; optical detection; photocurrent detection; sensitivity; variable time synchronous detection; voltage/time duality;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030574
