Broadband high speed optoelectronic semiconductor switch

Details Broadband high speed optoelectronic semiconductor switch Broadband high speed optoelectronic semiconductor switch

1980-11-24

1983-01-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

250214R, 307311, G02B 2700

Patent

active

043693717

ABSTRACT:
The optoelectronic switch includes a photosensitive GaAs FET onto which an optical signal may be directed. The optical signal is derived from an RF modulated light source. A voltage circuit is connected to the FET to switch the FET "on" or "off" by placing a positive or zero voltage respectively on the drain. An isolation of over 70 dB is obtained in this FET switch.

REFERENCES:
patent: 4242595 (1980-12-01), Lehovec
patent: 4286171 (1981-08-01), Hara et al.

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