Author(s): Ma, PF (Ma, Pengfei); Wang, PF (Wang, Pengfei); Wang, MQ (Wang, Mengqi); Luo, GZ (Luo, Guangzhen); Yu, L (Yu, Lei); Cui, LL (Cui, Langlin); Zhou, XL (Zhou, Xuliang); Zhang, YJ (Zhang, Yejin); Pan, JQ (Pan, Jiaoqing)

Source: OPTICS COMMUNICATIONS Volume: 527 Article Number: 128959 DOI: 10.1016/j.optcom.2022.128959 Published: JAN 15 2023

Abstract: High-directionality antennas can efficiently avoid blind spots in the field of view. And a uniform emission antenna can improve the near-field distribution of the antenna, increase the effective aperture of the antenna, and thereby reduce the divergence angle. In this manuscript, a SiN antenna of highly upward emission directionality and uniform emission based on the grating-waveguide-grating sandwich structure is designed. For the antenna, it has a flat near-field and a side mode suppression ratio of less than 0.2 from 1540 nm to 1620 nm. The length of the antenna is 500 mu m and the divergence angle is 0.17 degrees at 1550 nm. The beam steering range is 5.54 degrees from 1540 nm to 1620 nm and the upward directionality is over 80%. The highest upward directionality is about 92% at 1540 nm. These indicate that the proposed antenna can also be applied to LiDAR and so on.

Accession Number: WOS:000864019700006

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Yu, Lei                  0000-0002-9254-7585

ISSN: 0030-4018

eISSN: 1873-0310

Full Text: https://www.sciencedirect.com/science/article/pii/S003040182200606X?via%3Dihub