Demonstration of 2D beam steering using large-scale passive optical phased array enabled by multimode waveguides with reduced phase error

被引：10

作者：

Misugi, Yamato ^{[1
]}

Okayama, Hideaki ^{[2
]}

Kita, Tomohiro ^{[1
]}

机构：

[1] Waseda Univ, Fac Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[2] OKi Elect Ind Co Ltd, Saitama 3358510, Japan

来源：

APPLIED PHYSICS EXPRESS | 2022年 / 15卷 / 10期

关键词：

silicon photonics; optical phased array; arrayed waveguide grating; LIDAR;

D O I：

10.35848/1882-0786/ac9033

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical phased arrays (OPAs) have received considerable attention as solid-state beam scanners. However, conventional OPAs that actively control the phase difference between arrays are characterized by excessive power consumption for high-precision beam emission. In this study, we fabricated an OPA comprising Bragg grating and arrayed waveguide grating (AWG). Multi-mode waveguide is used in AWG to reduce the effect of manufacturing error. This device realizes wide and high-resolution two-dimensional beam steering only by sweeping wavelength. FWHM of the emitted beam is 0.534 degrees x 2.27 degrees, and the steering range is 43.9 degrees x 13.5 degrees with 1/64 of the power consumption of conventional OPA.

引用

页数：5