INSTRUMENT SYSTEMS was the first research and manufacturing company to launch a commercial polarization analyzer. The RPA 2000, now a second generation instrument, allows you to plug in and measure every polarization parameter of either free-space or fiber-guided radiation. Measurement results are presented as an ellipse diagram or using the Poincaré sphere. IS-Polar software controls the RPA2000 and displays the measured parameters in a variety of ways. Also controllable with ASCII commands, you can retrieve the Stokes parameters directly from the instrument using your own code.