Abstract

We propose and experimentally demonstrate a polarization multiplexed silicon optical phased array (OPA) with a wide scanning range. The two polarization states share the same power splitter tree and the phase shifter array. A polarization switch is introduced in front of the power splitter tree to manipulate the polarization state of the light in OPA. Through a polarization splitter–rotator (PSR), the light of two polarization states propagates into the superlattice grating antenna array. The wavelength tuning efficiency could be doubled by optimizing the parameters of the waveguide grating. We demonstrate the scheme on the commonly used 220 nm silicon-on-insulator (SOI) platform. Experimental results indicate that the 24.8° vertical scanning range could be realized with a high wavelength tuning efficiency of 0.31°/nm. The measured field of view (FOV) is 24.8 × 60°.

© 2023 Optica Publishing Group

Sparse 2-D optical phased array with large grating-lobe-free steering range based on an aperiodic grid

Qikai Huang, Hui Yu, Zhaoyang Zhang, Jie Zhao, Zhiyan Zhou, Nannan Ning, Bihu Lv, Kun Yin, Yuehai Wang, and Jianyi Yang
Opt. Lett. 48(11) 2849-2852 (2023)

Broadband silicon nitride nanophotonic phased arrays for wide-angle beam steering

Hongjie Wang, Zhenmin Chen, Caiming Sun, Shupeng Deng, Xinke Tang, Long Zhang, Rui Jiang, Wu Shi, Zhen Chen, Zhongyi Li, and Aidong Zhang
Opt. Lett. 46(2) 286-289 (2021)

Realization of a wide steering end-fire facet optical phased array using silicon rich silicon nitride

Hani Nejadriahi, Prabhav Gaur, Karl Johnson, Steve Pappert, Yeshaiahu Fainman, and Paul Yu
Opt. Lett. 48(3) 807-810 (2023)

Integrated lithium niobate optical phased array for two-dimensional beam steering

Gongcheng Yue and Yang Li
Opt. Lett. 48(14) 3633-3636 (2023)

Multi-band all-silicon TM-pass polarizer based on one-dimensional photonic crystals nanohole array

Guanglian Cheng, Qiyuan Li, Qiyuan Yi, Zhiwei Yan, Fanglu Xu, Xinzhe Xiong, Zengfan Shen, Chaotan Sima, Haicheng Li, and Li Shen
Opt. Lett. 48(22) 6072-6075 (2023)