Photonwares’ polarization controller converts any input state of polarization to any selectable output state of polarization by applying a set of electrical driving signals. It is based on 4 fast speed non-mechanical and highly stable electro-optical birefringence phase retardation plates. With a Photonwares firmware, it achieve endless polarization controlling, maintaining a constant output polarization without the need for resetting. The polarization controller is designed to meet the operation requirements of fast response and continuous operation to provide an ultimate solution for polarization selection. The device comes with 5V individually control circuit.