Regenerative multi-tone injection locking for linewidth enhancement and repetition rate stabilization of a PIC mode-locked laser

Abstract

We report the stabilization of a 10 GHz monolithic passively mode-locked laser using a novel combination of multitone injection locking and regenerative mode-locking via optoelectronic loop. Comb-teeth linewidths are narrowed by 4000x and repetition rate is stabilized to better than 10−10/τ at 1 second.