首页|Numerical research on mid-infrared supercontinuum generation in Ge11.5As24Se64.5 few-mode photonic crystal fibers
Numerical research on mid-infrared supercontinuum generation in Ge11.5As24Se64.5 few-mode photonic crystal fibers
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Based on the nonlinear and mode coupling effect in few-mode photonic crystal fiber(FM-PCF),an approach for su-percontinuum(SC)generation in the mid-infrared(MIR)region is proposed.The propagation characteristics of Ge11.5As24Se64.5 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 1.80 μm to 11.32 μm is generated by pumping 3.0-cm-long fiber at the central wavelength of 3.0 μm,the peak power of 120 W,and the pulse duration of 250 fs.
SHI Weihua、ZHANG Tiantian、XU Chuanxiang
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College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing Uni-versity of Posts and Telecommunications,Nanjing 210023,China
国家自然科学基金Postgraduate Research and Innova-tion Program Project of Jiangsu
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