| Stimulated Brillouin scattering by the interaction between different-order optical and acoustical modes in an As2Se3 photonic crystal fiber |
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| 作者姓名： | 高伟清 陈亮 蒋文辉 张正雄 张秀 高攀云 谢康 张维 周勇 廖梅松 铃木健伸 大石泰丈 |
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| 作者单位： | Department of Optical Engineering;School of Instrument Science and Opto-electronics Engineering;R&D Center of High Power Laser Components;Research Center for Advanced Photon Technology |
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| 基金项目： | supported by the National Key R&D Program of China(No.2018YFB0504500);the National Natural Science Foundation of China(NSFC)(Nos.61875052,61905059,and 11374084);the Anhui Provincial Natural Science Foundation(No.1908085QF273);the Fundamental Research Funds for the Central Universities(Nos.PA2019GDQT0007 and JZ2019HGTA0037). |
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| 摘 要： | Brillouin gain spectra(BGS)in an As2Se3 photonic crystal fiber(PCF)are investigated numerically.The profiles of the BGS are simulated by calculating the characteristics of different-order optical and acoustic waves in the PCFs with different core diameters.For the small-core PCF,there are two peaks in BGS,but there is only one peak for the large-core PCF.We also reveal that in the small-core PCF,the difference of Brillouin frequency shift between the LP01 and LP11 modes is obvious,while it is not obvious in the large-core PCF.The Brillouin threshold increases with the core diameter increasing.
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| 关 键 词： | stimulated BRILLOUIN scattering OPTICAL MODE acoustic MODE CHALCOGENIDE FIBER photonic crystal FIBER |
Stimulated Brillouin scattering by the interaction between different-order optical and acoustical modes in an As_2Se_3 photonic crystal fiber |
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| Institution: | (Department of Optical Engineering,School of Electronic Science&Applied Physics,Hefei University of Technology,Hefei 230601,China;School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,China;R&D Center of High Power Laser Components,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Research Center for Advanced Photon Technology,Toyota Technological Institute,Nagoya 468-8511,Japan) |
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| Abstract: | Brillouin gain spectra(BGS) in an As_2Se_3 photonic crystal fiber(PCF) are investigated numerically. The profiles of the BGS are simulated by calculating the characteristics of different-order optical and acoustic waves in the PCFs with different core diameters. For the small-core PCF, there are two peaks in BGS, but there is only one peak for the large-core PCF. We also reveal that in the small-core PCF, the difference of Brillouin frequency shift between the LP_(01) and LP_(11) modes is obvious, while it is not obvious in the large-core PCF. The Brillouin threshold increases with the core diameter increasing. |
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