论文信息 - Characteristics of dispersion-tuning in harmonically mode-locked fiber laser

Characteristics of dispersion-tuning in harmonically mode-locked fiber laser

We investigate the characteristics of dispersion-tuning in an actively mode-locked fiber ring laser. A continuous tuning range over 20 nm at about 1-GHz operation is realized. The range can be extended by optimizing the polarization to attain a flattened spectral gain in the Er-doped fiber. The influence of the harmonic order of operation together with the amount of dispersion in the fiber ring have been experimentally studied. Rational harmonic mode-locking is first demonstrated in the dispersion-tuned laser to increase the output repetition rate. Our results agree well with theory, showing that dispersion-tuning is a reliable, economic, and effective way to generate widely tunable pulses.

Y. Zhao | C. Shu

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