Light pulse generator

Details Light pulse generator Light pulse generator

1996-02-12

1997-01-21

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359184, 385 1, H01S 300, H04B 1004, G02F 101

Patent

active

055964494

ABSTRACT:
A light pulse generator is disclosed comprising an optical loop, a pumped-light source, and an optical switch controller. The optical loop includes a light mixer, a light isolator, an erbium-doped optical fiber, a light valve means, and a light divider. The pumped-light source generates a pumped-light and introduces the pumped-light into the optical loop through the light mixer. The optical switch controller progressively turns the optical switch to an ON-state using a control signal having a gentle positive slope so that the amount of a light outputted through the optical switch is gently increased in accordance with the gentle slope of the control signal. The length of time of the positive slope of the control signal equals the time which is required for circulating a light pulse through the optical loop through one cycle. A circulation of a light pulse is carried out in the optical loop while the optical switch is in the ON-state and the light pulse having a gentle slope is picked up from the optical loop through the light divider.

REFERENCES:
patent: 4923266 (1990-05-01), Bovet et al.
patent: 5479291 (1995-12-01), Smith et al.
patent: 5495362 (1996-02-01), Takatu et al.

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