Pure Photonics is making power monitoring arrays with analog output option and VOA (Variable Optical Attenuator) option. Array counts of 2, 4, and 8 are available in standard formfactor. Higher count products can be custom configured (e.g, 16 or 24 in 19″ rack).
Each unit has a digital interface (micro-USB) to control the channel selection, read the detected power and to control the VOA.
Power supplies are integrated on-board with a banana-plug input and a barrel plug input (switch selectable).
Optional built in VOA on each channel to either select a fixed (and changeable) attenuation level or controlled with control loop to a target output power.
Optional analog output option with output voltage proportional to the logarithmic power (i.e. 1mV per dBm, different conversions are possible).