Continuously variable fiber optic attenuator

Details Continuously variable fiber optic attenuator Continuously variable fiber optic attenuator

1990-02-07

1991-02-05

Healy, Brian

350 9621, 350311, 350318, 350 9618, G02B 626, G02B 520

Patent

active

049899384

ABSTRACT:
A continuously variable fiber optic attenuator which can be constructed in a size amenable to direct mounting on optical data application apparatus is presented. The attenuator utilizes a flexible filter of varying optical density which is oriented in an optical coupling region between two optical fibers. The filter can be displaced in a manner to vary the filter density in the optical coupling region and thereby vary the attenuation across the device. A resistor coupled to the attenuator provides means for calibration of the attenuator to provide a highly accurate and reproducible attenuation.

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