Fig. 1. Experimental setup for noise transfer function measurement of NPR mode-locked Yb-doped fiber laser. VOA, variable optical attenuator; WDM, wavelength-division multiplexer; YDF, Yb-doped fiber; col, collimator; PBS, polarizing beam splitter; HR, high reflection mirror; ISO, optical isolator; PD, photodiode.

Fig. 2. Experimentally measured transfer function (a) amplitude and (b) phase of NPR mode-locked Yb-doped fiber laser using different types of Yb-doped fibers and the same dispersion condition. The four lines represent four different types of fibers.

Fig. 3. (a) Phase noise measurements of laser system using different types of Yb-doped fibers based on the same dispersion condition. Four lines represent four different types of fiber. (b) Corresponding integrated phase noise.

Fig. 4. Measured optical spectrum at different net cavity dispersion using YD350.

Fig. 5. Experimentally measured transfer function (a) amplitude and (b) phase of the laser system using YD350 and by changing dispersion condition. The five lines represent five different dispersion conditions.

Fig. 6. (a) Phase noise measurements of laser system using YD350 and by changing dispersion condition. Five lines represent five different dispersion conditions. (b) Corresponding integrated phase noise.