Title :
GaAs optoelectronic mixer operation at 4.5 GHz
Author :
Lam, Dennis K W ; MacDonald, R. Ian
Author_Institution :
Communications Research Center, Ottawa, Ont., Canada
fDate :
12/1/1984 12:00:00 AM
Abstract :
Optoelectronic heterodyne detection of high-frequency intensity modulation signals using a GaAs photoconductive mixer is reported. Flat response for optical modulation frequencies up to 4.5 GHz is observed for downconversion to a 500-MHz intermediate frequency using a low power local oscillator. Heterodyne responsivity was enhanced significantly over direct detection with the same photoconductive detector due to improved contact performance under RF bias.
Keywords :
Communication switching; Gallium arsenide; High speed optical techniques; Optical mixing; Optical modulation; Optical noise; Optical saturation; Optical switches; Photoconductivity; Radio frequency;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/T-ED.1984.21785
