Abstract
We report on the soliton trapping in a fiber ring laser modelocked with a SESAM. It was observed that solitons along the two orthogonal polarization directions of the cavity with fairly large difference in central frequency and energy could be coupled together to form a group velocity locked vector soliton. In particular, due to that each of the coupled solitons forms its own soliton sidebands, two sets of soliton sidebands could be observed on the vector soliton spectrum. Numerical simulations have well confirmed the experimental observations.
Highlights
Soliton trapping in optical fibers was first theoretically predicted by Curtis R
In this paper we report on the experimental observation of another type of group velocity locked vector soliton (GVLVS) in the passively mode-locked fiber lasers
We have reported experimental observation of soliton trapping in a fiber laser mode-locked by a semiconductor saturable absorber mirror (SESAM)
Summary
Soliton trapping in optical fibers was first theoretically predicted by Curtis R. It refers to as the phenomenon that two solitons formed along each of the two orthogonal polarization directions of a weakly linear birefringent fiber can trap each other and copropagate as a non-dispersive unit despite of their intrinsic group velocity difference. Such a unit of coupled solitons was known as a group velocity locked vector soliton (GVLVS). Soliton trapping effect in optical fibers has been experimentally demonstrated [3, 4]
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