Experimental Observations of Multiple Solitons Generation in a Carbon-Nanotube Based Passively Mode-locked Fiber Laser

We report the experimental observations of multiple solitons gernration from a carbon nanotube (CNT) -based passively mode-locked fiber lasers. After a fiber-connector-type saturable absorber in which CNT is coated on the fiber connector end is successfully fabricated, stable mode-locked pulses with a 18.8MHz fundamental repetition rate at 1568nm central wavelength is self-started with only 12mW pumping power. The dynamic evolution of solitons as a function of the pump power is presented. Our laser produces multiple solitons of up to ten for the pump power of only 60mW.