Light waveform changing apparatus using an optical amplifier

Details Light waveform changing apparatus using an optical amplifier Light waveform changing apparatus using an optical amplifier

1989-05-19

1991-06-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

330 43, H01J 4000

Patent

active

050251422

ABSTRACT:
A light waveform shaping apparatus comprises; a beam splitting means for branching an input optical signal into two optical signals; a photoelectric converter for converting one of the two branched optical signals into an electrical signal; an optical amplifier whose gain is adjustable by a controlling electrical signal, for amplifying an optical signal; an input optical path for introducing the other branched optical signal to the optical amplifier; and an electrical circuit for introducing the electrical signal from the photoelectric converter to the optical amplifier; wherein the optical and controlling electrical signals are supplied to the optical amplifier at a predetermined timing of generally coincident arrival.

REFERENCES:
patent: 3887876 (1975-06-01), Zeidler
patent: 4053763 (1977-10-01), Harney
patent: 4310217 (1982-01-01), de Mendez et al.
patent: 4329664 (1982-05-01), Javan
patent: 4511850 (1985-04-01), Schlitt et al.
patent: 4847477 (1989-07-01), Smith

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