Numerical research on mid-infrared supercontinuum generation in Ge_(11.5)As_(24)Se_(64.5) few-mode photonic crystal fibers  

作　　者：SHI Weihua ZHANG Tiantian XU Chuanxiang 

机构地区：[1]College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Optoelectronics Letters》2022年第4期233-237,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61571237);the Postgraduate Research and Innovation Program Project of Jiangsu(No.KYCX20_0795)。

摘　　要：Based on the nonlinear and mode coupling effect in few-mode photonic crystal fiber(FM-PCF),an approach for supercontinuum(SC)generation in the mid-infrared(MIR)region is proposed.The propagation characteristics of Ge_(11.5)As_(24)Se_(64.5) FM-PCF have been analyzed and optimized by the full-vector finite element method.The two-mode generalized nonlinear Schrodinger equation(TM-GNLSE)is set up,and the SC generation has been analyzed by the split-step Fourier method.The SC from 1.80μm to 11.32μm is generated by pumping 3.0-cm-long fiber at the central wavelength of 3.0μm,the peak power of 120 W,and the pulse duration of 250 fs.

关 键 词：fiber PUMPING mode 

分 类 号：TN253[电子电信—物理电子学]