Optical detectors with selective bias voltage application

Details Optical detectors with selective bias voltage application Optical detectors with selective bias voltage application

1988-11-02

1990-04-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2505781, 357 30, H01J 4014, H01L 2714

Patent

active

049163051

ABSTRACT:
An optical detector comprises an array of PIN diodes each of which shows no photovoltaic output at zero bias but which can produce a photovoltaic output when correctly biased. A single amplifier is coupled to the array for amplifying produced photovoltaic voltages. When an optical signal incident on a particular PIN diode is required to be detected, that PIN diode is selectively and correctly biased by closure of an associated switch and the PIN diode output is amplified by the amplifier.

REFERENCES:
patent: 4368385 (1983-01-01), Kanbe et al.
patent: 4730198 (1988-03-01), Brown et al.
patent: 4835575 (1989-05-01), Plihal
R. I. MacDonald and E. H. Hara, "Researchers Open Pathway to Video Switching Centers", Canadian Electronics Engineering, vol. 24, No. 4, Apr. 1980, pp. 18-20.

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