Title :
Miniature gain and bias control circuit for avalanche photodiodes
Author :
O´Connell, Dan ; Morrison, A.P. ; McCarthy, K.G. ; Angove, P. ; O´Flynn, Brendan
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Coll. Cork
Abstract :
A feedback control circuit that automatically sets the gain of an avalanche photodiode (APD) is presented. The circuit is implemented on a proprietary 3D programmable modular platform. The APD gain can be set to within 10% of the required gain up to a gain of 45. Results show a steady bias voltage independent of supply fluctuations and excellent repeatability
Keywords :
avalanche photodiodes; circuit feedback; comparators (circuits); operational amplifiers; programmable circuits; avalanche photodiodes; bias control circuit; circuit implementation; feedback control circuit; miniature gain; programmable modular platform; supply fluctuations;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20073916
