Agilent / HP 81567A

This Optical Attenuator attenuates and controls the optical power level of light in single mode optical fibers.

As plug in modules for Agilent’s Lightwave Multichannel platform (8163A/B, 8164A/B, 8166A/B all sold separately)they allow you to set the attenuation factor and/or power level manually, or remotely via a common computer interface.

Their high accuracy combined with their flexibility make them ideal as test and measurement equipment for the modern telecommunication industry.

It features power control functionality that allows setting the output power level directly.

When the power control mode is enabled, the module automatically corrects power changes at the input to maintain the output level set by the user.