All-fiber squeezed polarization controller 1300/1550nm

The OZ Optics polarization controller allows one to convert any input polarization state to any desired output polarization state. The device combines the compact size and ease of use of standard volume optics with low cost, low loss, and low back reflections. The polarization controller works by applying pressure via an adjustable clamp. The pressure on the fiber induces birefringence within the core, causing the fiber to act as an order wave plate. Changing the pressure changes the delay between the fast and slow polarization components. Since the clamp is rotatable, the direction in which the stress is applied can be changed. This allows any output polarization to be achieved. The process is simple and fast. Output polarizations of over 30dB can typically be achieved in seconds.