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	Progress and Prospects of Silicon-based Design for Optical phased array
	Hu, Weiwei ; Peng, Chao ; Chang-Hasnain, Connie
	2016
关键词	high-contrast grating optical phased array beam steering high-Q resonance
英文摘要	The high-speed, high-efficient, compact phase modulator array is indispensable in the Optical-phased array (OPA) which has been considered as a promising technology for realizing flexible and efficient beam steering. In our research, two methods are presented to utilize high-contrast grating (HCG) as high-efficient phase modulator. One is that HCG possesses high-Q resonances that origins from the cancellation of leaky waves. As a result, sharp resonance peaks appear on the reflection spectrum thus HCGs can be utilized as efficient phase shifters. Another is that low-Q mode HCG is utilized as ultra-lightweight mirror. With MEMS technology, small HCG displacement (similar to 50 nm) leads to large phase change (similar to 1.7 pi). Effective beam steering is achieved in Connie Chang-Hasnian's group. On the other hand, we theoretically and experimentally investigate the system design for silicon-based optical phased array, including the star coupler, phased array, emission elements and far-field patterns. Further, the non-uniform optical phased array is presented.; EI; CPCI-S(ISTP); 9757
语种	英语
出处	Conference on High Contrast Metastructures V
DOI标识	10.1117/12.2214155
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449592]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Hu, Weiwei,Peng, Chao,Chang-Hasnain, Connie. Progress and Prospects of Silicon-based Design for Optical phased array. 2016-01-01.

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