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. 2023 Jun 26;23(13):5920. doi: 10.3390/s23135920

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Beam steering device. All the outputs of the chip are connected to the 4 × 4 fiber array to realize the conversion from 1D to 2D. (b) Photo of the SiO₂ chip. Inset: zoom-in image. (c) Packaged fiber array and lens [68].