A review of research on optical true time delay technology
Light controlled phased array has the advantages of fast response speed, compact system, diverse functions, and flexible control, and has been widely applied in many scientific and technological fields. Optical true delay technology (OTTD) is the most direct technical means to achieve phase delay of...
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EDP Sciences
2025-01-01
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| Series: | Journal of the European Optical Society-Rapid Publications |
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| Online Access: | https://jeos.edpsciences.org/articles/jeos/full_html/2025/01/jeos20240056/jeos20240056.html |
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| author | An Ting Liu Limin Han Chunhui Zhu Sai Jiang Yunfeng |
| author_facet | An Ting Liu Limin Han Chunhui Zhu Sai Jiang Yunfeng |
| author_sort | An Ting |
| collection | DOAJ |
| description | Light controlled phased array has the advantages of fast response speed, compact system, diverse functions, and flexible control, and has been widely applied in many scientific and technological fields. Optical true delay technology (OTTD) is the most direct technical means to achieve phase delay of optical carrier signals, and it is also the most basic technical means to implement optical controlled beamforming systems. In order to fully understand the optical true delay technology, this article first elaborates on the principle of phased array antennas and the reasons for beam squint, and analyzes the impact of true delay on the performance of phased array radar. Then, the basic principle, technological progress, and related applications of optical true delay are introduced. Taking four common structures of optical true delay lines as examples, which are micro-ring resonant cavity array, grating true time delay line, multi-path switchable optical true time delay line (OTTDL), and wavelength selective optical delay line, their performance in delay accuracy, adjustable delay range, and frequency bandwidth are compared. Finally, the current problems and future development trends of optical controlled beamforming technology were summarized. |
| format | Article |
| id | doaj-art-87a95511754c4dc4a48107f10fe20c38 |
| institution | Kabale University |
| issn | 1990-2573 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Journal of the European Optical Society-Rapid Publications |
| spelling | doaj-art-87a95511754c4dc4a48107f10fe20c382025-02-07T08:22:41ZengEDP SciencesJournal of the European Optical Society-Rapid Publications1990-25732025-01-01211210.1051/jeos/2024046jeos20240056A review of research on optical true time delay technologyAn Ting0Liu Limin1Han Chunhui2Zhu Sai3Jiang Yunfeng4Army Engineering University Shijiazhuang CampusArmy Engineering University Shijiazhuang CampusArmy Engineering University Shijiazhuang CampusArmy Engineering University Shijiazhuang CampusArmy Engineering University Shijiazhuang CampusLight controlled phased array has the advantages of fast response speed, compact system, diverse functions, and flexible control, and has been widely applied in many scientific and technological fields. Optical true delay technology (OTTD) is the most direct technical means to achieve phase delay of optical carrier signals, and it is also the most basic technical means to implement optical controlled beamforming systems. In order to fully understand the optical true delay technology, this article first elaborates on the principle of phased array antennas and the reasons for beam squint, and analyzes the impact of true delay on the performance of phased array radar. Then, the basic principle, technological progress, and related applications of optical true delay are introduced. Taking four common structures of optical true delay lines as examples, which are micro-ring resonant cavity array, grating true time delay line, multi-path switchable optical true time delay line (OTTDL), and wavelength selective optical delay line, their performance in delay accuracy, adjustable delay range, and frequency bandwidth are compared. Finally, the current problems and future development trends of optical controlled beamforming technology were summarized.https://jeos.edpsciences.org/articles/jeos/full_html/2025/01/jeos20240056/jeos20240056.htmlmicrowave photonicstrue time delay (ttd)optical true delay technology (ottd)optically controlled beamforming networklight controlled phased array |
| spellingShingle | An Ting Liu Limin Han Chunhui Zhu Sai Jiang Yunfeng A review of research on optical true time delay technology Journal of the European Optical Society-Rapid Publications microwave photonics true time delay (ttd) optical true delay technology (ottd) optically controlled beamforming network light controlled phased array |
| title | A review of research on optical true time delay technology |
| title_full | A review of research on optical true time delay technology |
| title_fullStr | A review of research on optical true time delay technology |
| title_full_unstemmed | A review of research on optical true time delay technology |
| title_short | A review of research on optical true time delay technology |
| title_sort | review of research on optical true time delay technology |
| topic | microwave photonics true time delay (ttd) optical true delay technology (ottd) optically controlled beamforming network light controlled phased array |
| url | https://jeos.edpsciences.org/articles/jeos/full_html/2025/01/jeos20240056/jeos20240056.html |
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