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Detection of radio-frequency modulated optical signals by two and three terminal microwave devicesAn interdigitated photoconductor (two terminal device) on GaAlAs/GaAs heterostructure was fabricated and tested by an electro-optical sampling technique. Further, the photoresponse of GaAlAs/GaAs HEMT (three terminal device) was obtained by illuminating the device with an optical signal modulated up to 8 GHz. Gain-bandwidth product, response time, and noise properties of photoconductor and HEMT devices were obtained. Monolithic integration of these photodetectors with GaAs microwave devices for optically controlled phased array antenna applications is discussed.
Document ID
19880063078
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bhasin, K. B. (NASA Lewis Research Center Cleveland, OH, United States)
Simons, R. N. (NASA Lewis Research Center Cleveland, OH, United States)
Wojtczuk, S. (Cornell University Ithaca, NY, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Communications And Radar
Accession Number
88A50305
Distribution Limits
Public
Copyright
Other

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