Dielectric Nanoaperture Metasurfaces in Silicon Waveguides for Efficient and Broadband Mode Conversion with an Ultrasmall Footprint

doi:10.1002/adom.202000529

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	Dielectric Nanoaperture Metasurfaces in Silicon Waveguides for Efficient and Broadband Mode Conversion with an Ultrasmall Footprint
	C. N. Yao,Y. L. Wang,J. H. Zhang,X. L. Zhang,C. Zhao,B. Wang,S. C. Singh and C. L. Guo
	2020
发表期刊	Advanced Optical Materials
ISSN	2195-1071
卷号	8 期号:17 页码:8
摘要	Efficient and reliable mode converters with broadband operation and small footprint will enable high-density silicon photonic integrated circuits to build high bitrate optical networks and handheld optical devices. Here, all-dielectric nanoaperture metasurfaces in the silicon layer of a silicon-on-insulator platform are reported for mode-order conversion with an ultrasmall footprint. Utilizing the advantages of an abrupt width change and metasurface, the mode conversion between TE00 and TE10 modes is realized with a conversion efficiency as high as approximate to 90% in simulations and 83.1% in experiments at lambda = 1.55 mu m within an ultrashort conversion length of about 2.42 mu m, the shortest ever achieved. The incident TE00 mode is converted to TE10 mode with purity of more than 90% in a broadband (Delta lambda approximate to 230 nm) wavelength range from 1.42 to 1.65 mu m. Moreover, optimizing the number, position, and dimension of nanoapertures, it is further demonstrated that the nanoaperture metasurface design can enable mode conversion between silicon waveguides of different thicknesses and different relative positions, and between TM modes.
DOI	10.1002/adom.202000529
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收录类别	SCI ; EI
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64449
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C. N. Yao,Y. L. Wang,J. H. Zhang,X. L. Zhang,C. Zhao,B. Wang,S. C. Singh and C. L. Guo. Dielectric Nanoaperture Metasurfaces in Silicon Waveguides for Efficient and Broadband Mode Conversion with an Ultrasmall Footprint[J]. Advanced Optical Materials,2020,8(17):8.
APA	C. N. Yao,Y. L. Wang,J. H. Zhang,X. L. Zhang,C. Zhao,B. Wang,S. C. Singh and C. L. Guo.(2020).Dielectric Nanoaperture Metasurfaces in Silicon Waveguides for Efficient and Broadband Mode Conversion with an Ultrasmall Footprint.Advanced Optical Materials,8(17),8.
MLA	C. N. Yao,Y. L. Wang,J. H. Zhang,X. L. Zhang,C. Zhao,B. Wang,S. C. Singh and C. L. Guo."Dielectric Nanoaperture Metasurfaces in Silicon Waveguides for Efficient and Broadband Mode Conversion with an Ultrasmall Footprint".Advanced Optical Materials 8.17(2020):8.

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