Abstract
Dissipative solitons, which result from the intricate balance between dispersion and nonlinearity as well as gain and loss, are of the fundamental scientific interest and numerous important applications. Here, we report a fiber laser that generates bisoliton – two consecutive dissipative solitons that preserve a fixed separation between them. Deviations from this separation result in its restoration. It is also found that these bisolitons have multiple discrete equilibrium distances with the quantized separations, as is confirmed by the theoretical analysis and the experimental observations. The main feature of our laser is the anomalous dispersion that is increased by an order of magnitude in comparison to previous studies. Then the spectral filtering effect plays a significant role in pulse-shaping. The proposed laser has the potential applications in optical communications and high-resolution optics for coding and transmission of information in higher-level modulation formats.
Highlights
Dissipative solitons, which result from the intricate balance between dispersion and nonlinearity as well as gain and loss, are of the fundamental scientific interest and numerous important applications
We present the experimental results on the bisolitons with multiple discrete equilibrium distances, which are delivered from a largely anomalous dispersion fiber Bragg grating (FBG)-based fiber laser with a narrow filter
The laser system consists of two FBGs, a fused coupler with 10% output ratio, a carbon nanotube (CNT) saturable absorber (SA), a 5-m-long erbium-doped fiber (EDF) with 6 dB/m absorption at 980 nm, a wavelength-division multiplexer
Summary
Dissipative solitons, which result from the intricate balance between dispersion and nonlinearity as well as gain and loss, are of the fundamental scientific interest and numerous important applications. We report a fiber laser that generates bisoliton – two consecutive dissipative solitons that preserve a fixed separation between them. It is found that these bisolitons have multiple discrete equilibrium distances with the quantized separations, as is confirmed by the theoretical analysis and the experimental observations.
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