Opto-electronic selector having a plurality of optical signal in

Details Opto-electronic selector having a plurality of optical signal in Opto-electronic selector having a plurality of optical signal in

1985-06-13

1987-04-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250578, H01J 4014

Patent

active

046563504

ABSTRACT:
An opto-electronic selector having matrix-addressed photodetectors is characterized in that the photodetectors (Ph) are followed by individual amplifiers (PA), each of which is powered at constant voltage by a voltage source under the control of a matrix line selection control (X) and at constant current from a current source proper to said amplifier and capable of being switched on under the control of a matrix column selection (Y), thereby forming a switching cell (C) in conjunction with the associated photodetector. Such a detector may be used in broadcasting programs to subscribers.

REFERENCES:
patent: 4592029 (1986-05-01), Altmann et al.
Optical Communication, 9th European Conference on Optical Communication, 23-26 Oct. 1983, pp. 331-334, P. B. Hesdahl et al., "A Multi Service Single Fibre Subscriber Network with Wideband Electro-Optical Switching".

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