Unidirectional optical device and regenerator

Details Unidirectional optical device and regenerator Unidirectional optical device and regenerator

1977-12-05

1979-05-01

Edlow, Martin H.

357 17, 357 55, 357 38, 350 961, 350 9611, H01L 3112

Patent

active

041527135

ABSTRACT:
A light-activated light-emitting device has at least one p-n junction provided with electrodes for confining light-emission to an area of the junction. It has been determined that light-emission can be activated by light impinging on the junction outside this confined area, so two optical fibers are provided, one being an input fiber for bringing activating light to the nonemitting sensitive part of the junction and the other fiber being an output fiber coupled to the light-emitting area. When the device is a p-n-p-n light-activated light-emitting switch provided with an RCL reset control circuit, a very inexpensive unidirectional optical pulse regenerator is obtained. The device in its various forms is advantageously suited for use in each of many stations along optical fiber data busses or in optical logic arrays because the unidirectional feature prevents light feedback between adjacent devices and consequently avoids spurious switching of a preceding device.

REFERENCES:
patent: 3852798 (1974-12-01), Lebaill
patent: 3936855 (1976-02-01), Goell
patent: 3968564 (1976-07-01), Springthorpe
patent: 3979587 (1976-09-01), Le Gremerex
patent: 4065729 (1977-12-01), Gover et al.

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