Cross-Polarization Modulation Domain Wall Solitons for WDM Signals in Birefringent Optical Fibers

Nonlinear cross-polarization modulation between two wavelength multiplexed channels propagating in an elliptically birefringent optical fiber leads to polarization domain wall solitons. These solitons represent a switching of the polarization of both waves between two stable orthogonal states. The potential application of polarization domains to nonlinear loss-free polarizers is described.