DocumentCode
3552352
Title
UHF photoparametric amplifier
Author
Grace, M.I.
Volume
11
fYear
1965
fDate
1965
Firstpage
40
Lastpage
40
Abstract
Measurements on a degenerate UHF photoparametric amplifier using an optical signal modulated at 690 Mc has confirmed the 3 dB noise figure predicted. The silicon photoparametric diode served as both the photodetector and varactor and was novel in several respects: the conductivity sequence was p-v-n-n+in contrast to the usual p-v-n+conventionally used for microwave photodiodes; and the diode was designed to be illuminated parallel to the p-v junction. Such a structure has an inherently high Q and features an extended optical response (quantum efficiency ≈ 10% at 1.06 µ), coupled with good UHF photodetection behavior, when used either as a simple (unpumped) photodiode or as a photoparametric diode. Data will be presented on photoparametric amplifier noise figure, bandwidth vs gain, and diode optical and electrical characteristics.
Keywords
Diodes; Noise figure; Noise measurement; Optical amplifiers; Optical modulation; Optical noise; Photodiodes; Semiconductor optical amplifiers; Stimulated emission; UHF measurements;
fLanguage
English
Publisher
ieee
Conference_Titel
Electron Devices Meeting, 1965 International
Type
conf
DOI
10.1109/IEDM.1965.187578
Filename
1474159
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