All-polarization-maintaining divided pulse fiber oscillator mode-locked with the optical Kerr effect
All-polarization-maintaining divided pulse fiber oscillator mode-locked with the optical Kerr effect
In this letter, we investigate a Yb-doped mode-locked fiber oscillator that uses coherent pulse division and recombination to avoid excessive nonlinear phase shifts. The mode-locking mechanism of the laser is based on the accumulation of a differential nonlinear phase between orthogonal polarization modes in the polarization-maintaining fiber segment. The inserted …