Dual Locking Modes in a Weakly Birefringent Ring Active Mode Locked Fiber Laser

摘要

Dual locking ranges in a harmonic mode-locked fiber laser with a birefringence cavity is reported in this paper. Experimental results clearly show the existence of two separated locking ranges in the vicinity of the 834th harmonic of the fundamental frequency. Theoretical explanation is given. Theoretical estimation of the locking range agrees well with the experimental result. Simulation also reproduces the experimental results.