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Proceedings Paper

Optical phased arrays based on silicon and GaAs photonic waveguides
Author(s): Jiali Liao; Yang Gao; Jiahui Liao; Yanling Sun; Li Yang; Lin Ma; Zhengzhong Lu; Zihao Wang
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Paper Abstract

Optical phased arrays can achieve inertialess, high-resolution, flexible beam steering required by a broad range of applications, such as laser radar, free space optical communication and interconnect, and laser projection displays. In this paper, we study the SOI and GaAs waveguide optical phased arrays (WOPAs) comparatively. The principle of the phase shifter is investigated based on the thermo-optic effect in silicon waveguides and electro-optic effect in GaAs waveguides. The propagation properties of optical field in the two kinds of WOPAs are studied numerically, including the guided modes, the propagation of optical field in single waveguide and the coupling properties of optical field in waveguide arrays. We also analyze the performance of the two kinds of WOPAs. Silicon WOPAs show superiorities of low propagation loss and wide beam scanning range, while GaAs WOPAs show superiorities of fast beam scanning speed. This research provides a valuable reference for the chip design of optical phased arrays.

Paper Details

Date Published: 25 October 2018
PDF: 7 pages
Proc. SPIE 10823, Nanophotonics and Micro/Nano Optics IV, 1082318 (25 October 2018); doi: 10.1117/12.2500472
Show Author Affiliations
Jiali Liao, Xidian Univ. (China)
Yang Gao, Xi'an Research Institute of High Technology (China)
Jiahui Liao, Chongqing Tongjing Vocational School (China)
Yanling Sun, Xidian Univ. (China)
Li Yang, Xidian Univ. (China)
Lin Ma, Xidian Univ. (China)
Zhengzhong Lu, Xidian Univ. (China)
Zihao Wang, Xidian Univ. (China)

Published in SPIE Proceedings Vol. 10823:
Nanophotonics and Micro/Nano Optics IV
Zhiping Zhou; Kazumi Wada, Editor(s)

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