Variable optical attenuator

Details Variable optical attenuator Variable optical attenuator

1997-06-23

1999-06-22

Ngo, Hung N.

Optical waveguides

Accessories

Attenuator

G02B 626

Patent

active

059150637

ABSTRACT:
A variable, hybrid optical attenuator has a flexure member which consists of a bridge portion joining two prongs which are flexibly movable relative to the bridge portion. A mirror is mounted on the bridge portion. The prongs are each connected to an actuator which can expand or contract in response to a control signal applied thereto. The control signal may be heat, an electric field, a magnetic field or, preferably, a combination thereof. The attenuator is positioned opposite a pair of optical waveguides so that an input optical signal from an input waveguide is incident on the mirror and, upon reflection, is received by the second waveguide. Attenuation of the transmission is effected by controlled tilting of the mirror caused by appropriate control signals, single or in combination, applied to one or both of the actuators.

REFERENCES:
patent: 4516827 (1985-05-01), Lance et al.
patent: 5185675 (1993-02-01), Banks
patent: 5208880 (1993-05-01), Riza et al.
patent: 5226104 (1993-07-01), Unterleitner et al.
patent: 5245463 (1993-09-01), Goto
patent: 5245464 (1993-09-01), Jensen
patent: 5550669 (1996-08-01), Patel
patent: 5600478 (1997-02-01), Stevens

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