Adjustable optical attenuator

Details Adjustable optical attenuator Adjustable optical attenuator

1998-11-24

2000-12-26

Healy, Brian

Optical waveguides

Accessories

Attenuator

385 25, 385 36, 385 34, G02B 600

Patent

active

061671851

ABSTRACT:
An optical attenuator for attenuating a collimated beam of light propagating along an optical path while preserving the composition of polarization of the collimated beam of light is disclosed. The optical attenuator comprises a beam attenuator for attenuating a portion of the collimated beam of light when a portion of the beam attenuator is disposed within the optical path. The beam attenuator has a cross section along a plane perpendicular to the direction of propagation of the collimated beam of light of the portion of the attenuator in the shape of a wedge. The attenuation is varied using a controller for moving the beam attenuator in order to vary a size of the portion of the wedge within the optical path.

REFERENCES:
patent: 4591231 (1986-05-01), Kaiser et al.
patent: 5087122 (1992-02-01), Ostrander et al.
patent: 5136681 (1992-08-01), Takahashi
patent: 5325459 (1994-06-01), Schmidt
patent: 5481631 (1996-01-01), Cahill et al.
patent: 5900983 (1999-05-01), Ford et al.

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