On-chip wavefront shaping in spacing-varied waveguide arrays
Author:
Niu Yunfei1ORCID, Niu Yunlong23, Hu Xiaopeng4, Hu Yong1, Du Qingyang1, Yu Shaoliang1, Chu Tao5ORCID
Affiliation:
1. Research Center for Intelligent Optoelectronic Computing , Zhejiang Laboratory , Hangzhou 311100 , China 2. College of Control Science and Engineering , Zhejiang University , Hangzhou 310027 , China 3. Radiation Monitoring Technical Center , Ministry of Ecology and Environment , Hangzhou , 310012 , China 4. National Laboratory of Solid State Microstructures, and College of Engineering and Applied Sciences , Nanjing University , Nanjing 210093 , China 5. College of Information Science and Electronic Engineering , Zhejiang University , Hangzhou 310027 , China
Abstract
Abstract
The ability to manipulate light propagation sets the foundations for optical communication and information processing systems. With the ever-growing data capacity and data rate, photonic integrated circuits have attracted increasing attentions of researchers owing to their large-volume integration capacity and fast operation speed. In this work, we proposed and experimentally demonstrated a new wavefront shaping method using waveguide arrays with hyperbolic secant refractive index profiles. Through theoretically analyzing the diffraction and coherence properties, we found that a single waveguide array can perform both imaging and phase transformation, which are the two primary functions of optical lenses. We further expanded this function and fabricated the corresponding devices on a silicon nitride waveguide platform. Deterministic beam shaping, such as focusing, expansion, collimation, and steering, is successfully realized. This wavefront control method exhibits the potential for on-chip optical routing, ranging, sensing, etc., with high integration density and scalability.
Funder
National Natural Science Foundation of China China Postdoctoral Science Foundation Key Research Project of Zhejiang Lab National Key R&D Program of China
Publisher
Walter de Gruyter GmbH
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology
Reference51 articles.
1. M. Nixon, O. Katz, E. Small, et al.., “Real-time wavefront shaping through scattering media by all-optical feedback,” Nat. Photonics, vol. 7, no. 11, pp. 919–924, 2013, https://doi.org/10.1038/nphoton.2013.248. 2. A. Daniel, X. B. Song, D. Oron, and Y. Silberberg, “Mode conversion via wavefront shaping,” Opt. Express, vol. 26, no. 17, pp. 22208–22217, 2018. https://doi.org/10.1364/oe.26.022208. 3. H. Frostig, E. Small, A. Daniel, P. Oulevey, S. Derevyanko, and Y. Silberberg, “Focusing light by wavefront shaping through disorder and nonlinearity,” Optica, vol. 4, no. 9, pp. 1073–1079, 2017. https://doi.org/10.1364/optica.4.001073. 4. Z. Li, Z. Yu, H. Hui, et al.., “Edge enhancement through scattering media enabled by optical wavefront shaping,” Photonics Res., vol. 8, no. 6, pp. 954–962, 2020. https://doi.org/10.1364/prj.388062. 5. X. Dong, J. Cheng, Y. Yuan, et al.., “Arbitrary large-gradient wavefront shaping: from local phase modulation to nonlocal diffraction engineering,” Photonics Res., vol. 10, no. 4, pp. 896–904, 2022. https://doi.org/10.1364/prj.438059.
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