| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Numerical investigation on coherent mid-infrared supercontinuum generation in chalcogenide PCFs with near-zero flattened all-normal dispersion profiles |
| Jie Han(韩杰)1, Sheng-Dong Chang(常圣东)2, Yan-Jia Lyu(吕彦佳)1, Yong Liu(刘永)1 |
1 State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;
2 School of Environment, 3480 University Street, McGill University, Montréal H3A 0E9, Canada |
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Abstract We design a novel all-normal flat near-zero dispersion chalcogenide photonic crystal fiber (PCF) for generating mid-infrared (MIR) supercontinuum (SC). The proposed PCF with a core made of As2Se3 glass and uniform air holes in the cladding is selectively filled with As2S5 glass. By carefully engineering the PCF with an all-normal flat near-zero dispersion profile, the anomalous-dispersion soliton effect is reduced, thus enabling broadband highly coherent SC to be generated. We also investigate the influence of the pulse parameters on the SC generation. Broadband SC covering 1.4 μm-10 μm with perfect coherence is achieved by pumping the proposed 3-cm-long PCF with 3-μm 100-fs pulses. The results provide a potential all-fiber realization of the broadband coherent MIR-SC.
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Received: 11 April 2019
Revised: 23 July 2019
Accepted manuscript online:
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PACS:
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42.81.-i
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(Fiber optics)
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42.65.-k
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(Nonlinear optics)
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42.65.Sf
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(Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61421002 and 61435003). |
Corresponding Authors:
Jie Han
E-mail: jiehan@std.uestc.edu.cn
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Cite this article:
Jie Han(韩杰), Sheng-Dong Chang(常圣东), Yan-Jia Lyu(吕彦佳), Yong Liu(刘永) Numerical investigation on coherent mid-infrared supercontinuum generation in chalcogenide PCFs with near-zero flattened all-normal dispersion profiles 2019 Chin. Phys. B 28 104204
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