典型文献
Metasurface doublet-integrated bidirectional grating antenna enabling enhanced wavelength-tuned beam steering
文献摘要：
We propose and demonstrate an optical phased-array-based bidirectional grating antenna(BDGA)in silicon nitride waveguides.The BDGA is integrated with a miniaturized all-dielectric metasurface doublet(MD)formed on a glass substrate.The BDGA device,which takes advantage of alternately feeding light to its ports in opposite directions,is presumed to effectively provide a doubled wavelength-tuned steering efficiency compared to its unidirectional counterpart.The MD,which is based on vertically cascaded convex and concave metalenses com-prising circular hydrogenated amorphous silicon nanopillars,is meticulously placed atop the BDGA chip to ac-cept and deflect a beam emanating from the emission area,thereby boosting the beam-steering performance.The manufactured BDGA could achieve an enhanced beam-steering efficiency of 0.148 deg/nm as well as a stable spectral emission response in the wavelength range of 1530-1600 nm.By deploying a fabricated MD atop the silicon photonic BDGA chip,the steering efficiency was confirmed to be boosted by a factor of～3.1,reaching 0.461 deg/nm,as intended.
文献关键词：
中图分类号：
作者姓名：
Woo-BIN LEE;CHUL-SOON IM;CHANGYI ZHOU;BISHAL BHANDARI;DUK-YONG CHOI;SANG-SHIN LEE
作者机构：
Department of Electronic Engineering,Kwangwoon University,Seoul 01897,Republic of Korea;Nano Device Application Center,Kwangwoon University,Seoul 01897,Republic of Korea;Laser Physics Centre,Research School of Physics,Australian National University,Canberra,ACT 2601,Australia
文献出处：
引用格式：
[1]Woo-BIN LEE;CHUL-SOON IM;CHANGYI ZHOU;BISHAL BHANDARI;DUK-YONG CHOI;SANG-SHIN LEE-.Metasurface doublet-integrated bidirectional grating antenna enabling enhanced wavelength-tuned beam steering)[J].光子学研究（英文）,2022(01):248-255
A类：
BDGA,nanopillars,meticulously
B类：
Metasurface,doublet,integrated,bidirectional,grating,antenna,enabling,enhanced,wavelength,tuned,beam,steering,We,propose,demonstrate,optical,phased,array,silicon,nitride,waveguides,miniaturized,dielectric,metasurface,MD,formed,glass,substrate,device,which,takes,advantage,alternately,feeding,light,its,ports,opposite,directions,presumed,effectively,provide,doubled,efficiency,compared,unidirectional,counterpart,vertically,cascaded,convex,concave,metalenses,prising,circular,hydrogenated,amorphous,placed,atop,chip,cept,deflect,emanating,from,emission,area,thereby,boosting,performance,manufactured,could,achieve,deg,well,stable,spectral,response,range,By,deploying,fabricated,photonic,was,confirmed,boosted,reaching,intended
AB值：
0.570938
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