Method and apparatus for precise measurement of long-term stabil

Details Method and apparatus for precise measurement of long-term stabil Method and apparatus for precise measurement of long-term stabil

1981-05-01

1984-07-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158D, G01R 3126

Patent

active

044595476

ABSTRACT:
A method and apparatus is disclosed for the measurement of the long-term bility of photodetectors. A fiber optic star coupler divides optical flux from a source of light into highly stable proportioned light outputs. Each of the photodetectors to be tested is connected to be irradiated by one of the star coupler light outputs. Each of at least one reference photodetectors having known stabilities is connected to one of the remaining outputs of the star coupler. Resulting outputs of the photodetectors to be tested are compared against the resulting output from the reference photodetector.

REFERENCES:
patent: 3749924 (1973-07-01), Vischulis
patent: 3781092 (1973-12-01), Sussman et al.
patent: 4122383 (1978-10-01), Frosch et al.
patent: 4129823 (1978-12-01), van der Pool et al.
patent: 4147979 (1979-04-01), Baues et al.
patent: 4163194 (1979-07-01), Ross

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