標題: | Large-scale optical phased array using a low-power multi-pass silicon photonic platform |
作者: | Miller, Steven A. Chang, You-Chia Phare, Christopher T. Shin, Min Chul Zadka, Moshe Roberts, Samantha P. Stern, Brian Ji, Xingchen Mohanty, Aseema Gordillo, Oscar A. Jimenez Dave, Utsav D. Lipson, Michal 光電工程學系 光電工程研究所 Department of Photonics Institute of EO Enginerring |
公開日期: | 20-Jan-2020 |
摘要: | Optical phased arrays are a promising beam-steering technology for ultra-small solid-state lidar and free-space communication systems. Long-range, high-performance arrays require a large beam emission area densely packed with thousands of actively phase-controlled, power-hungry light emitting elements. To date, such large-scale phased arrays have been impossible to realize since current demonstrated technologies would operate at untenable electrical power levels. Here we show a multi-pass photonic platform integrated into a large-scale phased array that lowers phase shifter power consumption by nearly 9 times. The multi-pass structure decreases the power consumption of a thermo-optic phase shifter to a P-pi of 1.7 mW/pi without sacrificing speed or optical bandwidth. Using this platform, we demonstrate a silicon photonic phased array containing 512 actively controlled elements, consuming only 1.9 W of power while performing 2D beam steering over a 70 degrees x 6 degrees field of view. Our results demonstrate a path forward to building scalable phased arrays containing thousands of active elements. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement |
URI: | http://dx.doi.org/10.1364/OPTICA.7.000003 http://hdl.handle.net/11536/153562 |
ISSN: | 2334-2536 |
DOI: | 10.1364/OPTICA.7.000003 |
期刊: | OPTICA |
Volume: | 7 |
Issue: | 1 |
起始頁: | 3 |
結束頁: | 6 |
Appears in Collections: | Articles |