Patent ID: 6816664
Filing Date: 2004-11-09
Classification: G02B

Abstract:
A motor driven variable optical attenuator comprising:a housing; an attenuation device received in the housing, the attenuation device comprising a first collimator, a second collimator generally aligned with the first collimator, and an adjusting device, the adjusting device comprising a first screw rod and a second screw rod, the first collimator retaining a first optical fiber therein, the second collimator retaining a second optical fiber therein; and a motor attached to the housing and drivably engaged with the second screw rod of the attenuation device, wherein the first screw rod is drivable by the second screw rod to cause lateral movement of the second collimator thereby controlling offset between the first collimator and the second collimator; wherein a round head is formed at a top of the second screw rod, and a keyhole is defined in said round head to facilitate engagement of the motor with the second screw rod.