Numerical simulation of supercontinuum generation based on the active nonlinear fiber

• 作者: JIA Cai-ping WANG Chun-can
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Optical Fibers and Communications
• 页码范围: 149-154
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11801-021-0063-0

摘要

The supercontinuum(SC)generation(SCG)based on the active nonlinear fiber has attracted much attention due to its advantages in the energy amplification and spectral broadening of the output pulses.The active step-index single-mode fiber is proposed for the SCG.A flat normal-dispersion profile ranging from 1 240 nm to 2 550 nm can be obtained by tuning the germanium(Ge)concentration and core size,where the values of the dispersion slope are between-0.01 ps/nm2/km and 0.05 ps/nm2/km.Furthermore,the output pulse from the 5 m Er-doped normal-dispersion fiber(NDF)with g0=9 m-1 has a peak power of 2.8 kW and a 20 dB spectral bandwidth of 507 nm ranging from 1 262 nm to 1 769 nm by using the 1 550 nm and 1 ps Gaussian pulse with a peak power of 10 kW as the pumping source.