Motor driven optical fiber variable attenuator

Details Motor driven optical fiber variable attenuator Motor driven optical fiber variable attenuator

1998-10-15

2000-11-07

Healy, Brian

Optical waveguides

Accessories

Attenuator

385 31, 385 36, 385 25, G02B 600

Patent

active

061447943

ABSTRACT:
A variable attenuator comprises a motor which actuates a lead screw to move rotatably, and a nut associated with the lead screw to move linearly. A neutral density filter moves along with the linearly moving nut wherein the filter is positioned between two spaced collimators for providing linear attenuation changes of light transmitted therebetween.

REFERENCES:
patent: 5506920 (1996-04-01), Suemura et al.
patent: 5805759 (1998-09-01), Fukushima
patent: 5900983 (1999-05-01), Ford et al.
patent: 5930441 (1999-07-01), Betts et al.

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