Dissipative soliton resonance pulse generation from an all-fiber mode-locked dumbbell-shaped fiber laser

We report on a new design for a passively mode-locked dumbbell-shaped fiber laser employing all normal dispersion fibers at 1 μm. The laser produced pulses of 18.8 nJ and 42.4 nJ from two output ports, at a repetition rate of 7.19 MHz. A narrow bandpass filter is inserted into the laser cavity to achieve the dissipative soliton resonance pulse generation.