Configurable topological beam splitting via antichiral gyromagnetic photonic crystal
Antichiral gyromagnetic photonic crystal (GPC) in a honeycomb lattice with the two interpenetrating triangular sublattices A and B magnetically biased in opposite directions can realize antichiral one-way edge states propagating along the same direction at its two parallel edges. Here, we report the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Editorial Office of Opto-Electronic Journals, Institute of Optics and Electronics, CAS, China
2022-05-01
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| Series: | Opto-Electronic Science |
| Subjects: | |
| Online Access: | https://www.oejournal.org/article/doi/10.29026/oes.2022.220001 |
| _version_ | 1827397662271340544 |
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| author | Jianfeng Chen Zhi-Yuan Li |
| author_facet | Jianfeng Chen Zhi-Yuan Li |
| author_sort | Jianfeng Chen |
| collection | DOAJ |
| description | Antichiral gyromagnetic photonic crystal (GPC) in a honeycomb lattice with the two interpenetrating triangular sublattices A and B magnetically biased in opposite directions can realize antichiral one-way edge states propagating along the same direction at its two parallel edges. Here, we report the construction and observation of topological beam splitting with the easily adjustable right-to-left ratio in an antichiral GPC. The splitter is compact and configurable, has high transmission efficiency, and allows for multi-channel utilization, crosstalk-proof, and robust against defects and obstacles. This magnificent performance is attributed to the peculiar property that antichiral one-way edge states exist only at zigzag edge but not at armchair edge of antichiral GPC. When we combine two rectangular antichiral GPCs holding left- and right-propagating antichiral one-way edge states respectively, bidirectionally radiating one-way edge states at two parallel zigzag edges can be achieved. Our observations can enrich the understanding of fundamental physics and expand topological photonic applications. |
| first_indexed | 2024-03-08T19:13:46Z |
| format | Article |
| id | doaj.art-a58df526f4114c378cad9c3185331440 |
| institution | Directory Open Access Journal |
| issn | 2097-0382 |
| language | English |
| last_indexed | 2024-03-08T19:13:46Z |
| publishDate | 2022-05-01 |
| publisher | Editorial Office of Opto-Electronic Journals, Institute of Optics and Electronics, CAS, China |
| record_format | Article |
| series | Opto-Electronic Science |
| spelling | doaj.art-a58df526f4114c378cad9c31853314402023-12-27T09:11:10ZengEditorial Office of Opto-Electronic Journals, Institute of Optics and Electronics, CAS, ChinaOpto-Electronic Science2097-03822022-05-01151910.29026/oes.2022.220001oes-2022-0001-LiZhiyuanConfigurable topological beam splitting via antichiral gyromagnetic photonic crystalJianfeng Chen0Zhi-Yuan Li1School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, ChinaSchool of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, ChinaAntichiral gyromagnetic photonic crystal (GPC) in a honeycomb lattice with the two interpenetrating triangular sublattices A and B magnetically biased in opposite directions can realize antichiral one-way edge states propagating along the same direction at its two parallel edges. Here, we report the construction and observation of topological beam splitting with the easily adjustable right-to-left ratio in an antichiral GPC. The splitter is compact and configurable, has high transmission efficiency, and allows for multi-channel utilization, crosstalk-proof, and robust against defects and obstacles. This magnificent performance is attributed to the peculiar property that antichiral one-way edge states exist only at zigzag edge but not at armchair edge of antichiral GPC. When we combine two rectangular antichiral GPCs holding left- and right-propagating antichiral one-way edge states respectively, bidirectionally radiating one-way edge states at two parallel zigzag edges can be achieved. Our observations can enrich the understanding of fundamental physics and expand topological photonic applications.https://www.oejournal.org/article/doi/10.29026/oes.2022.220001topological photonicsone-way edge statephotonic crystalbeam splittingtopological materials |
| spellingShingle | Jianfeng Chen Zhi-Yuan Li Configurable topological beam splitting via antichiral gyromagnetic photonic crystal Opto-Electronic Science topological photonics one-way edge state photonic crystal beam splitting topological materials |
| title | Configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| title_full | Configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| title_fullStr | Configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| title_full_unstemmed | Configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| title_short | Configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| title_sort | configurable topological beam splitting via antichiral gyromagnetic photonic crystal |
| topic | topological photonics one-way edge state photonic crystal beam splitting topological materials |
| url | https://www.oejournal.org/article/doi/10.29026/oes.2022.220001 |
| work_keys_str_mv | AT jianfengchen configurabletopologicalbeamsplittingviaantichiralgyromagneticphotoniccrystal AT zhiyuanli configurabletopologicalbeamsplittingviaantichiralgyromagneticphotoniccrystal |