Multi-Pulse Bound Soliton Fiber Laser Based on MoTe2 Saturable Absorber

Bound solitons have become a hot topic in the field of nonlinear optics due to their potential applications in optical communication, information processing and radar systems. However, the trapping of the cascaded bound soliton is still a major challenge up to now. Here, we propose and experimentally demonstrate a multi-pulse bound soliton fiber laser based on MoTe2 saturable absorber. In the experiment, MoTe2 nanosheets were synthesized by chemical vapor deposition and transferred to the fiber taper by optical deposition. Then, by inserting the MoTe2 saturable absorber into a ring cavity laser, the two-pulse, three-pulse and four-pulse bound solitons can be stably generated by properly adjusting the pump strength and polarization state. These cascaded bound solitons are expected to be applied to all-optical communication and bring new ideas to the study of soliton lasers.

Automated summary

By transferring MoTe2 nanosheets to the fiber taper using optical deposition, and inserting the MoTe2 saturable absorber into a ring cavity laser, stable two-pulse, three-pulse, and four-pulse bound solitons were successfully generated by adjusting the pump strength and polarization state, providing new ideas for the study of all-optical communication and soliton lasers.