We present a simple theoretical model that explains polarization switching in fiber ring lasers operating with a normal path-averaged dispersion and a typical intermediate level of birefringence. Such polarization dynamics, based on a type of polarization-domain-wall (PDW) structures, agree qualitatively well with our experimental observations. We also stress the complex and chaotic nature of the observed polarization-switching states. This is corroborated by detailed numerical simulations that predict the buildup of consecutive and transient PDW structures at the subnanosecond scale, which are not fully resolved experimentally.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: November 2, 2012
Manuscript Accepted: November 20, 2012
Published: December 19, 2012
Caroline Lecaplain, Philippe Grelu, and Stefan Wabnitz, "Polarization-domain-wall complexes in fiber lasers," J. Opt. Soc. Am. B 30, 211-218 (2013)