Observation of Soliton Molecules in a Robust All PM Mode-Locked Fiber Laser With Nonreciprocal Phase Bias
We report the first experimental observation, to the best of our knowledge, of soliton molecules in a robust all polarization-maintaining (PM) mode-locked fiber laser with a nonreciprocal phase bias that results PYJAMAS in a low self-starting threshold and stable mode locking.Through elaborately tuning the waveplate in the cavity, calibrating the l