Avalanche photodiode gain control system

Details Avalanche photodiode gain control system Avalanche photodiode gain control system

1978-10-16

1980-11-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214R, H01J 4014

Patent

active

042360692

ABSTRACT:
A system (10) for optimizing the gain of an avalanche photodiode (12) and an associated avalanche photodiode preamplifier (14) includes a variable voltage power supply (58) interconnected to the avalanche photodiode (12) for providing a bias voltage source for the avalanche photodiode (12). Circuitry (26, 28) is provided for measuring the output noise level of the avalanche photodiode (12) and preamplifier (14). Additional circuitry (46, 48) is responsive to the circuitry (26, 28) for measuring the output noise level of the avalance photodiode preamplifier (14) for generating a control signal. The control signal is applied to the variable voltage power supply (58) for varying the bias voltage applied to the avalanche photodiode (12) by the variable voltage power supply (58) to control the output noise level of the avalanche photodiode (12), such that the output noise level of the avalanche photodiode (12) matches the output noise level of the avalanche photodiode preamplifier (14) to thereby optimize the operation of the avalanche photodiode ( 12) and the avalanche photodiode preamplifier (14) combination.

REFERENCES:
patent: 3215843 (1965-11-01), Neil
patent: 3473084 (1969-10-01), Dodge
patent: 3516751 (1970-06-01), Fruengel
patent: 3558892 (1971-01-01), Seeley
patent: 3631250 (1971-12-01), Buskirk
patent: 3770966 (1973-11-01), Sagawa et al.
patent: 3772514 (1973-11-01), Sunderland
patent: 3830567 (1974-08-01), Riegl
patent: 3869207 (1975-03-01), Hermet et al.
patent: 3944813 (1976-03-01), Fowler
patent: 3967904 (1976-07-01), Cade
patent: 4075474 (1978-02-01), Straus et al.
patent: 4077718 (1978-03-01), Graham et al.

Affiliated with

Also associated with

Rating

Avalanche photodiode gain control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Avalanche photodiode gain control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Avalanche photodiode gain control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1131236