High repetition rate asynchronous mode-locked fiber lasers not only have the advantages of ultra-short output pulse-width and long-term stability, but also exhibit the unique laser dynamics of slow periodic pulse timing and central wavelength variation. In this article, we explain how to investigate the laser dynamics of asynchronous mode-locked fiber lasers theoretically, how to accurately determine the magnitudes of pulse timing and central wavelength variation experimentally, and how to develop a practical new method for measuring the fiber dispersion based on the studied laser dynamics.
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