Mid-infrared supercontinuum generation in a suspended-core As2S3 chalcogenide microstructured optical fiber
Mid-infrared supercontinuum generation in a suspended-core As2S3 chalcogenide microstructured optical fiber
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DOI：
10.1364/oe.21.009573
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发表时间：
2013-04-22
期刊：
影响因子：
3.8
通讯作者：
Ohishi, Yasutake
中科院分区：
文献类型：
--
作者：
Gao, Weiqing;El Amraoui, Mohammed;Ohishi, Yasutake
我们证明了在悬芯As2S3硫化物微结构光纤(MOF)中产生超连续谱(SC)。通过改变光纤长度、泵浦峰值功率和泵浦波长来研究SC的变化。在长光纤(20和40厘米)的情况下，由于光纤的吸收，SC范围是不连续的，并且在短于3500 nm的波长处停止。在短光纤(1.3 cm和2.4 cm)的情况下，SC范围是连续的，可以延伸到4微米以上的波长，当2500 nm处的泵浦峰值功率从0.24 kW增加到1.32kW时，SC展宽。Sc范围随抽运波长从2200 nm到2600 nm的变化而增大，相当于As2S3 MOF从正常区域到反常区域的色散。SC的产生用广义的非线性薛定谔方程来模拟。数值模拟包括2500 nm泵浦下1.3 cm和2.4 cm长光纤的SC差异，2.4 cm长光纤SC随抽运峰值功率的变化，1.3 cm光纤SC随抽运波长的变化。仿真结果与实验结果吻合较好。(C)2013年美国光学学会
We demonstrate the supercontinuum (SC) generation in a suspended-core As2S3 chalcogenide microstructured optical fiber (MOF). The variation of SC is investigated by changing the fiber length, pump peak power and pump wavelength. In the case of long fibers (20 and 40 cm), the SC ranges are discontinuous and stop at the wavelengths shorter than 3500 nm, due to the absorption of fiber. In the case of short fibers (1.3 and 2.4 cm), the SC ranges are continuous and can extend to the wavelengths longer than 4 mu m. The SC broadening is observed when the pump peak power increases from 0.24 to 1.32 kW at 2500 nm. The SC range increases with the pump wavelength changing from 2200 to 2600 nm, corresponding to the dispersion of As2S3 MOF from the normal to anomalous region. The SC generation is simulated by the generalized nonlinear Schrodinger equation. The simulation includes the SC difference between 1.3 and 2.4 cm long fiber by 2500 nm pumping, the variation of SC with pump peak power in 2.4 cm long fiber, and the variation of SC with pump wavelength in 1.3 cm long fiber. The simulation agrees well with the experiment. (C) 2013 Optical Society of America