Passively synchronized two-color mode-locked fiber system based on master-slave lasers geometry.

Using a master - slave configuration, a robust synchronization was achieved for two-color Erbium and Ytterbium mode-locked fiber lasers. Due to enhanced nonlinear interaction in the fiber, noise-free pulse-locking was achieved allowing for a cavity mismatch tolerance of 140 microm. This is the highest tolerable cavity-length difference ever been obtained for synchronized mode-locked oscillators.