PolaFlex™ is a turn-key instrument that can generate and maintain any desired state of polarization (SOP), regardless of the input SOP. It combines General Photonics’ patented polarization controller, in-line polarimeter, and control algorithm into an instrument that functions as both a deterministic polarization state generator and a polarization analyzer. The generated SOP and the corresponding Poincaré Sphere can be readily displayed on a computer screen via USB interface. To generate a desired SOP, a user simply inputs the corresponding Stokes parameters using the front panel keypad. The instrument automatically searches for the SOP and maintains it against input SOP fluctuations. Another attractive feature is that the user can scan through 6 distinct SOPs (0°, 90°, ±45°, RHC and LHC) sequentially with user defined speed for Mueller matrix calculations, or select any of the 6 states with the touch of a button. Furthermore, the user can select multiple predetermined SOP traces for the instrument to generate, emulating certain common polarization variations. The instrument can also function as a polarization scrambler, generating random SOP scans with user-defined scanning speed. Finally, with the internal polarization controller disabled, PolaFlex™ can function as an in-line polarimeter, displaying the instantaneous SOP and DOP of the input light beam. This instrument can be quickly and easily calibrated using its built-in self-calibration program to optimize DOP and SOP measurement and control at special wavelengths and temperatures. PolaFlex™ puts all of the tools necessary for polarization management at your fingertips.