Generation of noise-like pulse and dissipative soliton pair in actively mode-locked fiber laser

This paper reports on the experimental observation of a stable single dissipative soliton, a noise-like pulse, and a dissipative soliton pair in an actively mode-locked fiber laser within an all-normal dispersion cavity. The laser consists of fully polarization-maintaining fibers and components, providing a linear output polarization state. The full width at half maximum of the pulse is measured to be 25.3 ps and the output pulse energy after the gain fiber can reach 1.07 nJ. By shifting the direct current (DC) bias voltage of the modulator to V-pi, the spectral width increased from 6.3 nm to 7.7 nm. Under the same pumping power of 246 mW, the single dissipative soliton and the pair can exchange with each other by adjusting the DC voltage of the Mach-Zehnder intensity modulator.