基于混合玻璃光纤中超连续谱产生的数值模拟

深圳大学激光工程重点实验室,深圳518060

光电子与激光技术; 中红外超连续谱; 三硫化二砷混合玻璃光纤; 零色散点; 反常色散区; 峰值功率; 半极大宽度

Numerical simulation on supercontinuum generation in an As2S3-silica hybrid glass fiber
Yan Peiguang, Lin Rongyong, Dong Ruijuan, Zhang Genlin,

Yan Peiguang, Lin Rongyong, Dong Ruijuan, Zhang Genlin, Li Huiquan, and Huang ShishengShenzhen Key Laboratory of Laser Engineering, Shenzhen University 518060, P.R.China

optoelectronic and laser technology; mid-infrared supercontinuum; As2S3-silica hybrid grass fiber; zero dispersion wavelength; anomalous dispersion; peak power; full width at half maximum

DOI: 10.3724/SP.J.1249.2014.03293

备注

设计一种三硫化二砷混合玻璃光纤(As2S3-silica hybrid glass fiber,As2S3-silica HGF),通过调整纤芯直径大小,在1 000~6 000 nm波长范围内对其色散特性进行仿真分析.结果表明,当纤芯直径为1.2 μm时,光纤有两个零色散波长(zero dispersion wavelength,ZDW),分别是1 450 和2 870 nm,反常色散区覆盖1 450~2 870 nm.用2 μm激光器泵浦光纤,通过改变泵浦激光的峰值功率和脉冲半极大宽度(full width at half maximum,FWHM),模拟分析了中红外超连续谱(mid-infrared supercontinuum,mid-IR SC)产生的特性.

A new As2S3-silica hybrid grass fiber was designed. The corresponding dispersion properties were realized by adjusting the fiber core diameter in the wavelength range from 1 000 nm to 6 000 nm. The simulation results have shown that two zero dispersion wavelengths could be achieved with a core diameter of 1.2 μm and the anomalous dispersion in this fiber design was from 1 450 nm to 2 870 nm. The characteristics of mid-infrared supercontinuum generation from this As2S3-silica hybrid grass fiber are analyzed by changing the pump pulse parameters, i.e. peak pump power and the full width at half maximum of the pulse at 2 μm wavelength.

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