The PolarLok from Cambridge Research & Instrumentation Inc.
actively transforms arbitrary input state-of-polarization (SOP) to a fixed linear output. The company says it is the first polarization controller that incorporates full SOP sensing, providing critical feedback for superior closed-loop control. Designed for use in the laboratory, this device is a suitable replacement for conventional, manually adjusted controllers. It measures Poincare coordinates in real time and provides continuous restoration of the polarization state.
To contact the manufacturer of this product, click here