Broadband Supercontinuum Generation in Photonics Crystal Fiber Pumped by Femtosecond Carbon-Nanotube-based Passively Mode-locked Erbium-doped Fiber Laser

摘要

We present broadband supercontinuum (SC) generation in highly nonlinear photonics crystal fiber (PCF) using femtosecond carbon-nanotube (CNT)-based passively mode-locked erbium-doped fiber laser (EDFL). The erbium-doped passively mode-locked fiber laser incorporating CNT-based saturable absorber has achieved a pulse width of 620 fs with a repetition rate of 18 MHz at a centre wavelength of 1565 nm. An SC covering an optical spectrum from 1100 nm to 2100 nm has been generated successfully by launching the amplified femtosecond pulse into the PCF.