Silicon Ribbon-Based Dual-Beam Optical Phased Array with Low Crosstalk and Large FoV

Hsun Yuan Chi, Wei Hong, Hsuan Lai, Shih Hsiang Hsu, Che Chang Chang

研究成果: 雜誌貢獻文章同行評審

摘要

In this paper, a silicon ribbon (SR)-based microstructure is developed and added to a 32-channel optical phased array (OPA) to reduce the crosstalk between the antennas of grating waveguides. The spacing between the chirped grating antennas can be as close as 600 nm to effectively improve the field of view (FoV) of the OPA in the horizontal direction to 95 degrees. This SR-based approach substantially reduces the side lobe by 10 dB, effectively suppressing the noise and increasing the main lobe by 6 dB and considerably expanding the grating length with linear energy decay. The full width at the half maximum of the light spot reaches about 0.24 degrees. The antenna sites can simultaneously be scanned vertically by bi-directional inputs, effectively increasing the FoV to 30 degrees in the vertical direction.

原文英語
文章編號505
期刊Applied Sciences (Switzerland)
12
發行號1
DOIs
出版狀態已發佈 - 1月 1 2022

ASJC Scopus subject areas

  • 材料科學(全部)
  • 儀器
  • 工程 (全部)
  • 製程化學與技術
  • 電腦科學應用
  • 流體流動和轉移過程

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