HP 81532A Optical Power Sensor
The HP 81532A is a high sensitivity optical power sensor plug-in module that fits the 8153A and 8163 and 8166 Agilent/HP series mainframe. The 81532A power sensor includes a InGaAs sensor element which covers the range of 800-1700 nm wavelengths in a range of +3 to -110 dBm. Various connector interfaces are available for that module.
Click the PDF Specification for further information.