We propose an interpretation of the pronounced “M” spectral shape that is a recurrent feature in all-normal-dispersion mode-locked fiber laser dynamics. Our interpretation involves shock wave formation regularized by dissipation, modeled by a modified Burgers equation. The large fringes appearing at the edges of the spectrum result from discontinuities in the spectral phase.
© 2014 Optical Society of America
Lasers and Laser Optics
Original Manuscript: October 16, 2013
Revised Manuscript: November 24, 2013
Manuscript Accepted: December 3, 2013
Published: January 7, 2014
C. Lecaplain, J. M. Soto-Crespo, Ph. Grelu, and C. Conti, "Dissipative shock waves in all-normal-dispersion mode-locked fiber lasers," Opt. Lett. 39, 263-266 (2014)