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Owing to their wide range of exceptional properties, two-dimensional (2D) materials have emerged as exciting media for the development of highly functional optoelectronic devices. Of these materials, the transition-metal dichalcogenides (TMDCs) are of particular interest as, unlike graphene, they are often semiconductors, and their optoelectronic properties can be tuned quite dramatically by controlling...
We report on the first experimental observation of bound states of vector dissipative solitons (VDSs) in an erbium-doped fiber laser mode locked with a semiconductor saturable absorber mirror and operated in the normal dispersion regime. Bound states of either the coherently coupled VDSs or the incoherently coupled VDSs were obtained. No polarization evolution was observed for either of the bound...
A dispersion map that meets the conflicting needs of coherent and direct detection transmission is presented. Performance improvements over a conventional map are verified for coherent transmission by experiments and simulations.
This paper presents a simpler approach for the analysis of the excitation and the mode coupling effects of surface plasmons in a D-shaped fiber. It is proposed the resonant transfer of energy in the fiber can be predicted by considering the coincident propagation constant for two distinct waveguides, namely a circular step-index fiber; and a multilayered step-index planar waveguide having refractive...
Coexistence of scalar dissipative solitons along the two orthogonally polarized directions of a fiber laser is observed. Due to the large cavity birefringence, the dissipative solitons along different polarization axes have different group velocities.
Bound solitons are observed in a fiber laser passively mode-locked by carbon nanotube saturable absorber for the first time. Such bound solitons are observed to be stable, and have the characteristic of discrete, fixed soliton separations and phase difference of π. Our results once again show that the bound soliton emission is an intrinsic feature of the mode-locked soliton fiber lasers.
Atomic multi-layer graphene film as a saturable absorber was first demonstrated to be able to mode lock Ytterbium-doped fiber lasers at wavelength around 1 um. Determined by the operation conditions, single or multiple dissipative solitons (DSs) can be generated in the fiber lasers. DSs with pulse duration of 550~630 ps were generated. As graphene can also be used to mode lock erbium-doped fiber lasers...
Experimental observation of different types of vector solitons such as the bright-bright, dark-dark, and dark-bright vector soliton in single mode fiber lasers is reported. Experimental techniques for observing each of the vector solitons are explained. Special features of the vector solitons in fiber lasers are numerically simulated and compared with the experiments.
We demonstrate an FPGA-based control system which compensates random polarization changes with a fluctuation speed of up to 12 krad/s. Endless and uninterruptible behavior is confirmed. The residual polarization mismatch remains below 0.16 rad.
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