On-chip wavefront shaping in spacing-varied waveguide arrays

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.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: On-chip wavefront shaping in spacing-varied waveguide arrays ; volume:12 ; number:19 ; year:2023 ; pages:3737-3745 ; extent:9 ; Nanophotonics ; 12, Heft 19 (2023), 3737-3745 (gesamt 9)

Contributors, Places and Time

• Creator: Niu, Yunfei ; Niu, Yunlong ; Hu, Xiaopeng ; Hu, Yong ; Du, Qingyang ; Yu, Shaoliang ; Chu, Tao

Further information

• DOI: 10.1515/nanoph-2023-0323
• URN: urn:nbn:de:101:1-2023092914225282423550
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:47 AM CEST