Fig. 1. Experimental setup of high-speed wavelength tunable fiber laser based on acousto-optic tunable filter

Fig. 2. Optical spectrum measurement results of laser. (a) Output spectrum of linear scale laser; (b) output spectrum of logarithmic scale laser; optical spectra of the first and second stage amplifiers at central wavelength of 1041.36 nm in (c) linear and (d) logarithmic scales, respectively

Fig. 3. Repetition rate and pulse width of laser. (a) Repetition rates of output pulse at different center wavelengths; (b) output pulse width

Fig. 4. Frequency stabilization of laser. (a) Frequency spectrum; (b) frequency stabilization; (c) timing jitter; (d) phase noise

Fig. 5. Pulse sequence and DFT results at multi-pulse mode-locked state. (a) Time-domain pulse sequence; (b) pulse sequence within roundtrip; (c) real-time spectrum of pulse sequence as marked in Fig. 5(b)

Fig. 6. Pulse sequence and DFT result at single-pulse mode-locked state. (a) Modulation signal, pump power in cavity, and time-domain pulse sequence; (b) real-time spectrum