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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.26654 |
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| _version_ | 1866908917181710336 |
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| author | Hsu, Chung-Yu Hsieh, Ping-Yen Chiu, Hsun-Sung Tung, Li-Jun Yu, Chieh-Chih Chen, Ko-Chi Hong, Yu-Heng Kuo, Hao-Chung Chow, Chi-Wai Chang, You-Chia |
| author_facet | Hsu, Chung-Yu Hsieh, Ping-Yen Chiu, Hsun-Sung Tung, Li-Jun Yu, Chieh-Chih Chen, Ko-Chi Hong, Yu-Heng Kuo, Hao-Chung Chow, Chi-Wai Chang, You-Chia |
| contents | Focal plane arrays (FPAs) promise robust solid-state beam steering for LiDAR and free-space optical communications. However, the need for external collimation lenses hinders chip-scale compactness. Discrete switching between FPA elements further introduces blind spots and limits the number of resolvable points, restricting applications that require continuous tracking. Here, we demonstrate a silicon photonic beam steerer based on a metalens FPA that monolithically integrates the collimation lens on-chip. Thermo-optic prisms enable continuous fine-tuning, eliminating blind spots and tripling the number of resolvable points. Continuous steering over a 62° field of view is achieved while maintaining high beam quality, with an average sidelobe suppression ratio of 19 dB. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_26654 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Silicon Photonic Beam Steerer Based on Metalens Focal Plane Array Hsu, Chung-Yu Hsieh, Ping-Yen Chiu, Hsun-Sung Tung, Li-Jun Yu, Chieh-Chih Chen, Ko-Chi Hong, Yu-Heng Kuo, Hao-Chung Chow, Chi-Wai Chang, You-Chia Optics Focal plane arrays (FPAs) promise robust solid-state beam steering for LiDAR and free-space optical communications. However, the need for external collimation lenses hinders chip-scale compactness. Discrete switching between FPA elements further introduces blind spots and limits the number of resolvable points, restricting applications that require continuous tracking. Here, we demonstrate a silicon photonic beam steerer based on a metalens FPA that monolithically integrates the collimation lens on-chip. Thermo-optic prisms enable continuous fine-tuning, eliminating blind spots and tripling the number of resolvable points. Continuous steering over a 62° field of view is achieved while maintaining high beam quality, with an average sidelobe suppression ratio of 19 dB. |
| title | Silicon Photonic Beam Steerer Based on Metalens Focal Plane Array |
| topic | Optics |
| url | https://arxiv.org/abs/2603.26654 |