Variable optical attenuator for optical communications

Details Variable optical attenuator for optical communications Variable optical attenuator for optical communications

2006-05-30

2006-05-30

Palmer, Phan (Department: 2874)

Optical waveguides

Accessories

Attenuator

C385S033000, C385S034000, C385S035000

Reexamination Certificate

active

07054537

ABSTRACT:
A variable optical attenuator for optical communications comprises: a substrate on which a plurality of alignment grooves are patterned; an input optical fiber aligned in one of the alignment grooves and receiving an optical signal; a reflector formed on the substrate so as to move to change a path of an optical signal which has passed through the input optical fiber; an output optical fiber aligned in one of the alignment grooves and outputting an optical signal whose path has been changed; a first lens aligned in one of the alignment grooves between the input/output optical fibers and the reflector so as to collimate an optical signal in a direction perpendicular to the substrate; and a second lens patterned on the substrate between the input/output optical fibers and the reflector so as to collimate an optical signal in a direction horizontal to the substrate, thereby facilitating an assembly process, reducing an alignment error, and miniaturizing its entire size.

REFERENCES:
patent: 2002/0097977 (2002-07-01), Morimoto et al.
patent: 2002-221676 (2002-08-01), None

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