研究目的
To characterize a range of instabilities in a dissipative soliton fibre laser in a regime where both conventional soliton and similariton propagation play significant roles in the intracavity pulse shaping.
研究成果
The results show that instabilities such as soliton explosions and intermittence are a universal feature of dissipative soliton systems transitioning from noise to stability. The study highlights the utility of real-time techniques like DFT to capture complex transient processes in dissipative soliton systems.
研究不足
The study acknowledges that the simplified scalar model used in numerical simulations is not expected to quantitatively reproduce the complex instability behaviour observed in experiments.
1：Experimental Design and Method Selection:
The study uses the Dispersive Fourier Transform (DFT) technique for real-time spectral measurements.
2：Sample Selection and Data Sources:
The experiments were conducted on an Er-doped fibre (EDF) amplifier based ring laser.
3：List of Experimental Equipment and Materials:
The setup includes a mode-locked laser ring cavity with segments of anomalous and normal dispersion fibre, a spectral filter, and a polarizing beam splitter.
4：Experimental Procedures and Operational Workflow:
The laser output was monitored using a 5 GHz photodiode and an optical spectrum analyser. DFT was used for real-time spectral measurements.
5：Data Analysis Methods:
The field autocorrelation of the soliton molecule bound state was computed from the Fourier transform of the DFT spectra via the Weiner-Khinchin theorem.
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