Ultrafast one-chip optical receiver with functional metasurface
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913002763059200 |
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| author | Soma, Go Akazawa, Tomohiro Kato, Eisaku Komatsu, Kento Takenaka, Mitsuru Nakano, Yoshiaki Tanemura, Takuo |
| author_facet | Soma, Go Akazawa, Tomohiro Kato, Eisaku Komatsu, Kento Takenaka, Mitsuru Nakano, Yoshiaki Tanemura, Takuo |
| contents | High-speed optical receivers are crucial in modern optical communication systems. While complex photonic integrated circuits (PICs) are widely employed to harness the full degrees of freedom (DOFs) of light for efficient data transmission, their waveguide nature inherently constrains two-dimensional spatial scaling to accommodate a large number of optical signals in parallel. Here, we present a novel optical receiver platform that fully exploits the high spatial parallelism and ultrabroad bandwidth of light, while leveraging all DOFs - intensity, phase, and polarization. Our solution integrates a thin metasurface, composed of silicon nanoposts, with ultrafast membrane photodetectors on a compact chip. The metasurface provides all the functionalities of conventional PICs for normal-incident spatially parallelized light, enabling high-speed detection of optical signals in various modulation formats, including simultaneous detection of 320-gigabits-per-second four-channel signals and coherent detection of a 240-gigabits-per-second signal. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_02264 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultrafast one-chip optical receiver with functional metasurface Soma, Go Akazawa, Tomohiro Kato, Eisaku Komatsu, Kento Takenaka, Mitsuru Nakano, Yoshiaki Tanemura, Takuo Optics Applied Physics High-speed optical receivers are crucial in modern optical communication systems. While complex photonic integrated circuits (PICs) are widely employed to harness the full degrees of freedom (DOFs) of light for efficient data transmission, their waveguide nature inherently constrains two-dimensional spatial scaling to accommodate a large number of optical signals in parallel. Here, we present a novel optical receiver platform that fully exploits the high spatial parallelism and ultrabroad bandwidth of light, while leveraging all DOFs - intensity, phase, and polarization. Our solution integrates a thin metasurface, composed of silicon nanoposts, with ultrafast membrane photodetectors on a compact chip. The metasurface provides all the functionalities of conventional PICs for normal-incident spatially parallelized light, enabling high-speed detection of optical signals in various modulation formats, including simultaneous detection of 320-gigabits-per-second four-channel signals and coherent detection of a 240-gigabits-per-second signal. |
| title | Ultrafast one-chip optical receiver with functional metasurface |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2503.02264 |