Abstract

We experimentally demonstrate beam steering in an optical phased array (OPA) featuring a mixture of individual and cascaded phase modulator architecture embedded in the binary splitter tree. We show equivalent beam forming in a 16 channel OPA with 16 separate applied voltages and a cascaded 16ch OPA with 6 control voltages. A 32ch OPA with 10 control voltages is also demonstrated. These results illustrate a flexible means of designing an OPA with significantly fewer electrical connections than the optical channel count, while minimizing the impact of waveguide phase errors on the output beam quality.

Impact of process variations on splitter-tree-based integrated optical phased arrays

Zhengxing Zhang, Milica Notaros, Zhengqi Gao, Uttara Chakraborty, Jelena Notaros, and Duane S. Boning
Opt. Express 31(8) 12912-12921 (2023)

Silicon optical phased array with calibration-free phase shifters

Wenlei Li, Jingye Chen, Dong Liang, Daoxin Dai, and Yaocheng Shi
Opt. Express 30(24) 44029-44038 (2022)

Wafer-level calibration of large-scale integrated optical phased arrays

Sylvain Guerber, Daivid Fowler, Jonathan Faugier-Tovar, Kim Abdoul Carim, Baptiste Delplanque, and Bertrand Szelag
Opt. Express 30(20) 35246-35255 (2022)

Liquid-crystal-based visible-light integrated optical phased arrays and application to underwater communications

Milica Notaros, Daniel M. DeSantis, Manan Raval, and Jelena Notaros
Opt. Lett. 48(20) 5269-5272 (2023)

On-chip calibration and control of optical phased arrays

Tin Komljenovic and Paolo Pintus
Opt. Express 26(3) 3199-3210 (2018)