Stable polarization-locked temporal vector solitons are found in a saturable absorber mode-locked fiber laser with weak cavity birefringence. The system is theoretically modeled with two coupled complex Ginzburg–Landau equations that include fiber birefringence, spectral filtering, saturable gain, and slow saturable absorption. The solutions to this system are similar to those for elliptically polarized vector solitons in a lossless birefringent fiber. Numerical simulations show qualitative agreement with experimental results.
© 2000 Optical Society of America
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(260.1440) Physical optics : Birefringence
(260.5210) Physical optics : Photoionization
J. M. Soto-Crespo, N. N. Akhmediev, B. C. Collings, S. T. Cundiff, K. Bergman, and W. H. Knox, "Polarization-locked temporal vector solitons in a fiber laser: theory," J. Opt. Soc. Am. B 17, 366-372 (2000)