Pigtailed Polarization Controllers With Fiber PFPC-11-400-S-3/125-XX-1-1

Polarization controllers allow one to convert any input polarization to any desired output polarization. The device combines the compact size and ease of use of standard bulk optics systems with low costs, low losses, and low backreflections. The controller works by applying pressure with an adjustable clamp. The pressure on the fiber causes a birefringence within the fiber core, causing the fiber to act as a fractional wave plate. Varying the pressure varies the delay between the fast and slow polarization components. The clamp is rotatable, allowing one to change the direction in which the stress is applied. This allows any output polarization to be achieved. The process is simple and quick. Output polarizations exceeding 30dB can be routinely achieved in seconds.