Accession Number : AD0691202

Title :   MICROWAVE PHOTODIODES: SENSITIVITY AS A FUNCTION OF BIAS AND GEOMETRY.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : MacPherson,Alan C.

Report Date : 09 JUL 1969

Pagination or Media Count : 12

Abstract : A simple model of the microwave semiconductor photodiode has been examined theoretically with an emphasis on the dependence of sensitivity on bias, frequency, and geometrical factors. The noise equivalent power (NEP) of a small diode, a large diode, and an array of small diodes have been compared. According to this theory the large diode and the array of diodes with the same total active area have the same NEP at low frequencies, but the array is superior in high-frequency NEP. These conclusions are independent of diode bias. Curves of NEP vs frequency are presented for an array of nine diodes and for an array of 100 diodes. (Author)

Descriptors :   (*OPTICAL COMMUNICATIONS, PHOTODIODES), (*PHOTODIODES, SENSITIVITY), SEMICONDUCTOR DIODES, LASERS, DEMODULATORS, POWER, MICROWAVE EQUIPMENT

Subject Categories : Electrical and Electronic Equipment
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE