Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band
On-chip optical communications are in increasingly demand for low-loss, small-footprint and power-efficient waveguiding solutions in the telecom band. However, most integrated optical circuits suffer from high propagation loss and low integration degree. Through manipulating the valley-dependent top...
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-08-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2022-0169 |
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| author | Qi Zhipeng Hu Guohua Deng Chunyu Sun Hao Sun Yaohui Li Ying Liu Bo Bai Yu Chen Shuaidong Cui Yiping |
| author_facet | Qi Zhipeng Hu Guohua Deng Chunyu Sun Hao Sun Yaohui Li Ying Liu Bo Bai Yu Chen Shuaidong Cui Yiping |
| author_sort | Qi Zhipeng |
| collection | DOAJ |
| description | On-chip optical communications are in increasingly demand for low-loss, small-footprint and power-efficient waveguiding solutions in the telecom band. However, most integrated optical circuits suffer from high propagation loss and low integration degree. Through manipulating the valley-dependent topological phase of light, we have experimentally demonstrated both robust optical transport and electrical modulation of lightwaves at telecom wavelengths in the valley photonic crystals. With the adoption of valley kink states, the 25 Gbit/s optical signal at 1550 nm is successfully transmitted through a highly twisted interface. Furthermore, an extreme high data rate of 100 Gbit/s is demonstrated with such topological waveguide by wavelength division multiplexing. The electrical tunability of the topological modulators based on thermo-optic effect is also verified, opening a novel route towards active valley kink photonic devices. Our study shows a great possibility of making use of the topological protection in building up high-speed datalinks on a chip. |
| format | Article |
| id | doaj-art-7dd738724dfb4ab4aed71ae1dd586faf |
| institution | OA Journals |
| issn | 2192-8614 |
| language | English |
| publishDate | 2022-08-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-7dd738724dfb4ab4aed71ae1dd586faf2025-08-20T01:53:26ZengDe GruyterNanophotonics2192-86142022-08-0111184273428510.1515/nanoph-2022-0169Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom bandQi Zhipeng0Hu Guohua1Deng Chunyu2Sun Hao3Sun Yaohui4Li Ying5Liu Bo6Bai Yu7Chen Shuaidong8Cui Yiping9School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing210044, ChinaAdvanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing210096, ChinaAdvanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing210096, ChinaSchool of Physical and Mathematical Sciences, Nanyang Technological University, 50 Nanyang Avenue, 639798Singapore, SingaporeAdvanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing210096, ChinaSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing210044, ChinaSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing210044, ChinaSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing210044, ChinaSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing210044, ChinaAdvanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing210096, ChinaOn-chip optical communications are in increasingly demand for low-loss, small-footprint and power-efficient waveguiding solutions in the telecom band. However, most integrated optical circuits suffer from high propagation loss and low integration degree. Through manipulating the valley-dependent topological phase of light, we have experimentally demonstrated both robust optical transport and electrical modulation of lightwaves at telecom wavelengths in the valley photonic crystals. With the adoption of valley kink states, the 25 Gbit/s optical signal at 1550 nm is successfully transmitted through a highly twisted interface. Furthermore, an extreme high data rate of 100 Gbit/s is demonstrated with such topological waveguide by wavelength division multiplexing. The electrical tunability of the topological modulators based on thermo-optic effect is also verified, opening a novel route towards active valley kink photonic devices. Our study shows a great possibility of making use of the topological protection in building up high-speed datalinks on a chip.https://doi.org/10.1515/nanoph-2022-0169light modulationoptical communicationsrobust optical transporttelecom bandtopological photonicsvalley kink state |
| spellingShingle | Qi Zhipeng Hu Guohua Deng Chunyu Sun Hao Sun Yaohui Li Ying Liu Bo Bai Yu Chen Shuaidong Cui Yiping Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band Nanophotonics light modulation optical communications robust optical transport telecom band topological photonics valley kink state |
| title | Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band |
| title_full | Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band |
| title_fullStr | Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band |
| title_full_unstemmed | Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band |
| title_short | Electrical tunable topological valley photonic crystals for on-chip optical communications in the telecom band |
| title_sort | electrical tunable topological valley photonic crystals for on chip optical communications in the telecom band |
| topic | light modulation optical communications robust optical transport telecom band topological photonics valley kink state |
| url | https://doi.org/10.1515/nanoph-2022-0169 |
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