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在环形腔主动锁模光纤激光器中引入啁啾光纤光栅。利用啁啾光纤光栅的大色散特性 ,通过调节调制频率 ,实现波长调谐 ,调谐范围 2nm。所得脉冲为重复频率 2 .5GHz ,脉宽约 6 0ps的正啁啾脉冲
Chirped fiber grating is introduced in the active cavity mode-locked fiber laser. By using the chromatic dispersion characteristics of chirped fiber gratings, the wavelength can be tuned by adjusting the modulation frequency, and the tuning range is 2nm. The obtained pulse is a positive chirp pulse with a repetition frequency of 2.5 GHz and a pulse width of about 60 ps