Tunable dual-wavelength passively mode-locked thulium-doped fiber laser using carbon nanotube

Abstract

A tunable dual-wavelength passively mode-locked thulium-doped fiber laser (TDFL) based on single-wall carbon nanotube is demonstrated. By properly tuning the pump power and the polarization controller, both single-and dual-wavelength mode-locked operation can be achieved. The repetition rates of the single-and dual-wavelength mode-locked operation are both 17.64 MHz. The duration of the ultrashort soliton pulse is about 3.7 ps. By appropriately adjusting the polarization state of the laser, the dual wavelength can be tuned from 1879.8 and 1894.5 nm to 1903.3 and 1914.1 nm. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)