Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism
Abstract Topological photonic structures have great potential to revolutionize on-chip optical integration due to the merit of robust propagation. However, an equally important issue, i.e., the efficient input and output coupling of topological structure with other elements, has not been systematica...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59941-6 |
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| author | Bojian Shi Qi Jia Xiaoxin Li Yanxia Zhang Hang Li Yanyu Gao Wenya Gao Xiaoyu Li Donghua Tang Tongtong Zhu Shan Gao Jing Yang Rui Feng Fangkui Sun Chunying Guan Yongyin Cao Cheng-Wei Qiu Weiqiang Ding |
| author_facet | Bojian Shi Qi Jia Xiaoxin Li Yanxia Zhang Hang Li Yanyu Gao Wenya Gao Xiaoyu Li Donghua Tang Tongtong Zhu Shan Gao Jing Yang Rui Feng Fangkui Sun Chunying Guan Yongyin Cao Cheng-Wei Qiu Weiqiang Ding |
| author_sort | Bojian Shi |
| collection | DOAJ |
| description | Abstract Topological photonic structures have great potential to revolutionize on-chip optical integration due to the merit of robust propagation. However, an equally important issue, i.e., the efficient input and output coupling of topological structure with other elements, has not been systematically addressed. Here, we reveal that the coupling of topological photonic structures does not follow the mode matching principle widely used before, but follows the principle of transverse spin matching (TSM). According to this mechanism, efficient coupling between a topological waveguide (TWG) and a strip waveguide (SWG) is designed theoretically and demonstrated experimentally. Theoretical and experimental transmission efficiencies of 96.3% and 94.2% are respectively obtained, which are much larger than those obtained before. The TSM enabled efficient topological structure coupling guarantees a high overall energy efficiency, and paves the way for compact topological photonic chips. |
| format | Article |
| id | doaj-art-59b1601f8bf54d5cb92d8f2d1d09b6e1 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-59b1601f8bf54d5cb92d8f2d1d09b6e12025-08-20T03:48:18ZengNature PortfolioNature Communications2041-17232025-05-011611710.1038/s41467-025-59941-6Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanismBojian Shi0Qi Jia1Xiaoxin Li2Yanxia Zhang3Hang Li4Yanyu Gao5Wenya Gao6Xiaoyu Li7Donghua Tang8Tongtong Zhu9Shan Gao10Jing Yang11Rui Feng12Fangkui Sun13Chunying Guan14Yongyin Cao15Cheng-Wei Qiu16Weiqiang Ding17Institute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyDepartment of Physics, School of Science, Northeast Forestry UniversitySchool of Physics, Dalian University of TechnologyCollege of Physics and Optoelectronic Engineering, Harbin Engineering UniversityCollege of Physics and Optoelectronic Engineering, Harbin Engineering UniversityInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyCollege of Physics and Optoelectronic Engineering, Harbin Engineering UniversityInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyDepartment of Electrical and Computer Engineering, National University of SingaporeInstitute of Advanced Photonics, School of Physics, Harbin Institute of TechnologyAbstract Topological photonic structures have great potential to revolutionize on-chip optical integration due to the merit of robust propagation. However, an equally important issue, i.e., the efficient input and output coupling of topological structure with other elements, has not been systematically addressed. Here, we reveal that the coupling of topological photonic structures does not follow the mode matching principle widely used before, but follows the principle of transverse spin matching (TSM). According to this mechanism, efficient coupling between a topological waveguide (TWG) and a strip waveguide (SWG) is designed theoretically and demonstrated experimentally. Theoretical and experimental transmission efficiencies of 96.3% and 94.2% are respectively obtained, which are much larger than those obtained before. The TSM enabled efficient topological structure coupling guarantees a high overall energy efficiency, and paves the way for compact topological photonic chips.https://doi.org/10.1038/s41467-025-59941-6 |
| spellingShingle | Bojian Shi Qi Jia Xiaoxin Li Yanxia Zhang Hang Li Yanyu Gao Wenya Gao Xiaoyu Li Donghua Tang Tongtong Zhu Shan Gao Jing Yang Rui Feng Fangkui Sun Chunying Guan Yongyin Cao Cheng-Wei Qiu Weiqiang Ding Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism Nature Communications |
| title | Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| title_full | Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| title_fullStr | Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| title_full_unstemmed | Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| title_short | Efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| title_sort | efficient coupling of topological photonic crystal waveguides based on transverse spin matching mechanism |
| url | https://doi.org/10.1038/s41467-025-59941-6 |
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