光学
光束转向
相控阵光学
包络线(雷达)
材料科学
相控阵
梁(结构)
物理
计算机科学
电信
天线(收音机)
雷达
作者
Weihan Xu,Linjie Zhou,Liangjun Lu,Jianping Chen
出处
期刊:Optics Express
[The Optical Society]
日期:2019-01-31
卷期号:27 (3): 3354-3354
被引量:50
摘要
We investigate the feasibility of generating a plateau envelope for beam-steering with optical phased arrays (OPAs). The design guidelines are summarized from numerical simulations and verified with a fabricated chip, which incorporates both a coupling-suppressed curved waveguide array with a pitch of 0.8 μm for light emission and a 1-μm-long silica cavity for envelope tailoring. This silicon-on-insulator (SOI) based device demonstrates aliasing-free beam-steering over the entire field-of-view available (-32°~32°) with a far-field addressability of 6.71°. The steered beam exhibits a plateau envelope, with a peak intensity fluctuation of less than 0.45 dB, from -30° to 30°. These results represent a significant step towards realizing integrated OPA for optical beam-forming with a large aliasing-free steering range and a uniform beam intensity.
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