1：Experimental Design and Method Selection:

The study employs a passively mode-locked ?ber laser setup to observe loosely bound solitons and pulsations. The real-time measurement is based on the dispersive Fourier-transform technique.

2：Sample Selection and Data Sources:

The experiment uses a ?ber laser composed of a 980-nm laser diode, a fused wavelength division multiplexer, a piece of erbium-doped ?ber, a fused 10/90 optical coupler, a polarization-dependent isolator, and two polarization controllers.

3：List of Experimental Equipment and Materials:

Includes a 980-nm laser diode, erbium-doped ?ber, optical coupler, polarization-dependent isolator, polarization controllers, optical spectrum analyzer, oscilloscope, rf analyzer, and commercial autocorrelator.

4：Experimental Procedures and Operational Workflow:

The setup involves changing the paddles of polarization controllers to obtain stable single-pulse mode locking and increasing pump power to observe multiple-pulse states.

5：Data Analysis Methods:

The real-time spectral and temporal evolution dynamics are evaluated using a high-speed oscilloscope and photodetector.