Investigation of stimulated Brillouin scattering in As2S3 photonic crystal fibers at the mid-infrared waveband

doi:10.37188/CO.EN.2022-0003

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	Investigation of stimulated Brillouin scattering in As2S3 photonic crystal fibers at the mid-infrared waveband
	Sun, Hui-Jie; Hou, Shang-Lin; Lei, Jing-Li
刊名	Chinese Optics
	2022-07-01
卷号	15 期号:4 页码:835-844
关键词	Arsenic compounds Crystal whiskers Filling Infrared devices Optical fiber fabrication Single mode fibers Stimulated Brillouin scattering Air filling factors Brillouin frequency shifts Brillouin gain spectrum Fiber-optics Mid-infrared waveband Midinfrared Numerical results Photonic-crystal fiber Pump wavelength Single mode operation
ISSN号	2095-1531
DOI	10.37188/CO.EN.2022-0003
英文摘要	Stimulated Brillouin scattering in As2S3 photonic crystal fibers was investigated at wavelengths of 2 μm to 6 μm by the finite element method. The numerical results indicate that the proposed photonic crystal fiber can maintain single-mode operation when the air filling factor is less than 0.6. The Brillouin frequency shift is mainly influenced by the pump wavelength and fiber structure. The Brillouin frequency shift decreases by 4.16 GHz when the pump wavelength is increased from 2 μm to 6 μm, while the Brillouin frequency shift changes by the order of megahertz when the rate of air filling increases from 0.5 to 0.6. The FWHM of the Brillouin gain spectrum depends on the phonon lifetime, and the FWHM of the Brillouin gain spectrum is nine times wider at a pump wavelength of 2 μm than that at a pump wavelength of 6 μm. The maximum Brillouin gain of the proposed fibers with air filling fractions of 0.5 and 0.6 are 2.413×10−10 m/W and 2.429×10−10 m/W, respectively. The Brillouin threshold is positively correlated with the pump wavelength for the same effective fiber length, and is 27.8% and 19.6% larger at a pump wavelength of 6 μm than that at 2 μm with air fill factors of 0.5 and 0.6, respectively. The numerical results are of great significance for the design and fabrication of optical devices or optical sensors based on the proposed fibers in the mid-infrared band. © 2022 Editorial Office of Chinese Optics. All rights reserved.
WOS研究方向	Optics
语种	英语
出版者	Editorial Office of Chinese Optics
WOS记录号	WOS:000843276100005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159719]
专题	理学院
作者单位	School of Science, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Sun, Hui-Jie,Hou, Shang-Lin,Lei, Jing-Li. Investigation of stimulated Brillouin scattering in As2S3 photonic crystal fibers at the mid-infrared waveband[J]. Chinese Optics,2022,15(4):835-844.
APA	Sun, Hui-Jie,Hou, Shang-Lin,&Lei, Jing-Li.(2022).Investigation of stimulated Brillouin scattering in As2S3 photonic crystal fibers at the mid-infrared waveband.Chinese Optics,15(4),835-844.
MLA	Sun, Hui-Jie,et al."Investigation of stimulated Brillouin scattering in As2S3 photonic crystal fibers at the mid-infrared waveband".Chinese Optics 15.4(2022):835-844.