Switchable operation of multiple solitons and dissipative soliton resonance in a C- and L-band mode-locked fiber laser

Abstract We report on the wavelength-switchable operation of multiple solitons and dissipative soliton resonance (DSR) in C- and L-band fiber lasers. Mode-locking operations can be alternatively switched between 1565 nm and 1604 nm with adjustments to the polarization controller. Through controlling the intracavity filtering effect, tunable operations have been observed from 1563.7 nm to 1574.6 nm and from 1600.3 nm to 1605.7 nm. More importantly, the fiber laser operated at the 1565 nm waveband tended to generate multiple solitons, whereas one operated at the 1604 nm waveband tended to generate a rectangular DSR. Our investigations may contribute to understanding complex soliton dynamics in fiber lasers.