Optical Pulse Generation with Different Repetition Rates in aDual-Wavelength Actively Mode-Locked Fiber Ring Laser

We propose a simple configuration for dual-wavelength operation in an actively mode-locked fiber ring laser with fiber Bragg gratings. We experimentlly demonstrate simultaneously mode-locked operation with two wavelengths at different repetition rates: one is harmonically mode-locked and the other is rational harmonically mode-locked.