Optical attenuator

Details Optical attenuator Optical attenuator

1996-05-16

1997-10-14

Ullah, Akm E.

Optical waveguides

Accessories

Attenuator

G02B 636

Patent

active

056779771

ABSTRACT:
The apparatus is an attenuator for use in an optical fiber link. The attenuator is a full circular loop of continuous optical fiber with connection means at the ends of the loop to interconnect with the other optical fiber components in the system. The attenuation of optical transmission through the loop is continuously variable by twisting the loop out of its original planar configuration. A lockable rotating shaft clamped to the side of the loop remote from the connection means is turned to rotate the loop.

REFERENCES:
patent: 4697869 (1987-10-01), So et al.
patent: 4721351 (1988-01-01), Goepfert et al.
patent: 4881793 (1989-11-01), Tarbox
patent: 4952798 (1990-08-01), Graham et al.
patent: 4979793 (1990-12-01), Bowen et al.
patent: 5311614 (1994-05-01), Caron et al.
patent: 5319734 (1994-06-01), Buzzetti

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