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Broadband polarization pulling using Raman amplification
Muga, Nelson J.; Ferreira, Mario F. S.; Pinto, Armando N.The Raman gain based polarization pulling process in a copropagating scheme is investigated. We map the degree of polarization, the angle between the signal and pump output Stokes vectors, the mean signal gain and its standard deviation considering the entire Raman gain bandwidth. We show that, in the undepleted regime (signal input power similar to 1 mu W), the degree of polarization is proportional to the pum...
Uniform polarization scattering with fiber-coil-based polarization controllers
Muga, Nelson J.; Pinto, Armando Nolasco; Ferreira, Mário F. S.; Ferreira da Rocha, José R.A detailed study of fiber-coil-based polarization controllers (PCs) is performed. First, a method to deterministically calculate the PC configuration in order to transform between any two states of polarization is presented. In a second stage, the case in which the configuration angles are randomly changed is studied. The cases of a single PC and of the system obtained with the concatenation of several PCs are ...
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