IEEE Microwave and Guided Wave Letters · 1997 · 40 citations · 19 references
EngineeringElectrical EngineeringOptoelectronicsSemiconductor DevicesSemiconductor MaterialsOptoelectronic DevicesOptoelectronic MaterialsPhotodetectorsPhotonic Integrated CircuitsSemiconductor HeterostructuresConversion GainHeterojunction DevicesHeterojunctionsIntegrated PhotodetectorsOptoelectronic PropertiesPhotodiodesPhototransistorsSemiconductor Heterojunctions
We report the first experimental results for optoelectronic mixing using a two-terminal edge-coupled InP/InGaAs heterojunction phototransistor (HPT). The HPT optoelectronic mixer (OEM) exhibits a maximum of 7-dB conversion gain relative to a 100% quantum efficient photodetector operated at the optical modulation frequency. We give a qualitative explanation for the observed conversion gain variation with the HPT bias voltage.
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