Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications
Abstract A reconfigurable intelligent surface (RIS), a leading‐edge technology, represents a new paradigm for adaptive control of electromagnetic waves between a source and a user. While RIS technology has proven effective in manipulating radio frequency waves using passive elements such as diodes a...
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| Format: | Article |
| Language: | English |
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Wiley
2024-11-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202406690 |
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| author | Ramna Khalid Jaekyung Kim Nasir Mahmood Humberto Cabrera Muhammad Qasim Mehmood Aaron Danner Muhammad Zubair Junsuk Rho |
| author_facet | Ramna Khalid Jaekyung Kim Nasir Mahmood Humberto Cabrera Muhammad Qasim Mehmood Aaron Danner Muhammad Zubair Junsuk Rho |
| author_sort | Ramna Khalid |
| collection | DOAJ |
| description | Abstract A reconfigurable intelligent surface (RIS), a leading‐edge technology, represents a new paradigm for adaptive control of electromagnetic waves between a source and a user. While RIS technology has proven effective in manipulating radio frequency waves using passive elements such as diodes and MEMS, its application in the optical domain is challenging. The main difficulty lies in meeting key performance indicators, with the most critical being accurate and self‐adjusting positioning. This work presents an alternative RIS design methodology driven by an all‐silicon structure and fluid infiltration, to achieve real‐time control of focal length toward a designated user, thereby enabling secure data transmission. To validate the concept, both numerical simulations and experimental investigations of the RIS design methodology are conducted to demonstrate the performance of fluid‐infiltrated metalens‐driven RIS for this application. When combined with different fluids, the resulting ultra‐compact RIS exhibits exceptional varifocal abilities, ranging from 0.4 to 0.5 mm, thereby confirming the adaptive tuning capabilities of the design. This may significantly enhance the modulation of optical waves and promote the development of RIS‐based applications in wireless communications and secure data‐transmission integrated photonic devices. |
| format | Article |
| id | doaj-art-0b8b4d6ee7bb48daab249dfda598b8c1 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-0b8b4d6ee7bb48daab249dfda598b8c12024-11-20T19:25:40ZengWileyAdvanced Science2198-38442024-11-011143n/an/a10.1002/advs.202406690Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless CommunicationsRamna Khalid0Jaekyung Kim1Nasir Mahmood2Humberto Cabrera3Muhammad Qasim Mehmood4Aaron Danner5Muhammad Zubair6Junsuk Rho7MicroNano Lab Department of Electrical Engineering Information Technology University of the Punjab (ITU) Lahore 54000 PakistanDepartment of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of KoreaSZCU‐ITU Joint International MetaCenter for Advanced Photonics and Electronics Suzhou City University Suzhou 215104 ChinaMLab, STI Unit The Abdus Salam International Centre for Theoretical Physics Trieste 34151 ItalyMicroNano Lab Department of Electrical Engineering Information Technology University of the Punjab (ITU) Lahore 54000 PakistanDepartment of Electrical and Computer Engineering National University of Singapore Singapore 117583 SingaporeMicroNano Lab Department of Electrical Engineering Information Technology University of the Punjab (ITU) Lahore 54000 PakistanDepartment of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of KoreaAbstract A reconfigurable intelligent surface (RIS), a leading‐edge technology, represents a new paradigm for adaptive control of electromagnetic waves between a source and a user. While RIS technology has proven effective in manipulating radio frequency waves using passive elements such as diodes and MEMS, its application in the optical domain is challenging. The main difficulty lies in meeting key performance indicators, with the most critical being accurate and self‐adjusting positioning. This work presents an alternative RIS design methodology driven by an all‐silicon structure and fluid infiltration, to achieve real‐time control of focal length toward a designated user, thereby enabling secure data transmission. To validate the concept, both numerical simulations and experimental investigations of the RIS design methodology are conducted to demonstrate the performance of fluid‐infiltrated metalens‐driven RIS for this application. When combined with different fluids, the resulting ultra‐compact RIS exhibits exceptional varifocal abilities, ranging from 0.4 to 0.5 mm, thereby confirming the adaptive tuning capabilities of the design. This may significantly enhance the modulation of optical waves and promote the development of RIS‐based applications in wireless communications and secure data‐transmission integrated photonic devices.https://doi.org/10.1002/advs.202406690fluid‐infiltrationintelligent metasurfaceoptical communicationreconfigurable metalensvarifocal metalens |
| spellingShingle | Ramna Khalid Jaekyung Kim Nasir Mahmood Humberto Cabrera Muhammad Qasim Mehmood Aaron Danner Muhammad Zubair Junsuk Rho Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications Advanced Science fluid‐infiltration intelligent metasurface optical communication reconfigurable metalens varifocal metalens |
| title | Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications |
| title_full | Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications |
| title_fullStr | Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications |
| title_full_unstemmed | Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications |
| title_short | Fluid‐Infiltrated Metalens‐Driven Reconfigurable Intelligent Surfaces for Optical Wireless Communications |
| title_sort | fluid infiltrated metalens driven reconfigurable intelligent surfaces for optical wireless communications |
| topic | fluid‐infiltration intelligent metasurface optical communication reconfigurable metalens varifocal metalens |
| url | https://doi.org/10.1002/advs.202406690 |
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