Cross-coupling is the process by which power is transferred from one mode to another. In the case of polarization-maintaining fibers this transfer is from the launched (required) polaristaion to the other (unrequired) polarization.
The measure of the quantity of light which is coupled into the wrong polarization state is the Extinction ratio.
For more information, please request our technical note 'PER and Crosstalk'.
Related Products: PM Coupler Fiber, PM Erbium Doped Fiber, PM Gyro Fiber, Polyimide Coated PM Fiber, Spun HiBi Fiber, Standard PM Fiber, Telecoms PM Fiber
Related Terms: Beat Length, Birefringence, Birefringent Fiber, Extinction Ratio, Form Birefringence, H-Parameter, Highly Birefringent (HiBi), Polarization Extinction Ratio (PER), Polarization Maintaining (PM) Fiber, Polarization Mode, Stress Applying Parts (SAPs)