Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers
The high security of optical phased array (OPA) signals is an important requirement for OPA-based optical wireless communication (OWC). We propose a method for improving the security of OPA-based OWC systems using optically injection-locked (OIL) semiconductor lasers. We theoretically demonstrate th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/8/11/469 |
| _version_ | 1797508761727795200 |
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| author | Anh-Hang Nguyen Jun-Hyung Cho Hyuk-Kee Sung |
| author_facet | Anh-Hang Nguyen Jun-Hyung Cho Hyuk-Kee Sung |
| author_sort | Anh-Hang Nguyen |
| collection | DOAJ |
| description | The high security of optical phased array (OPA) signals is an important requirement for OPA-based optical wireless communication (OWC). We propose a method for improving the security of OPA-based OWC systems using optically injection-locked (OIL) semiconductor lasers. We theoretically demonstrate the amplitude and phase modulation of OIL-OPA elements by controlling the injection-locking parameters of the OIL lasers. When a Taylor window function is applied as the amplitude profile of the OPA transmitter, the sidelobe level decreases by 22 dB and the unsecured distance reduces 10 times compared to the case without the Taylor window function. In addition, the unsecured area factor becomes 0.8%. |
| first_indexed | 2024-03-10T05:09:26Z |
| format | Article |
| id | doaj.art-e7b613295fe24e3fbece5c2829f5d4bc |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T05:09:26Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-e7b613295fe24e3fbece5c2829f5d4bc2023-11-23T01:01:01ZengMDPI AGPhotonics2304-67322021-10-0181146910.3390/photonics8110469Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked LasersAnh-Hang Nguyen0Jun-Hyung Cho1Hyuk-Kee Sung2Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, KoreaResearch Institute of Science and Technology, Hongik University, Seoul 04066, KoreaDepartment of Electronic and Electrical Engineering, Hongik University, Seoul 04066, KoreaThe high security of optical phased array (OPA) signals is an important requirement for OPA-based optical wireless communication (OWC). We propose a method for improving the security of OPA-based OWC systems using optically injection-locked (OIL) semiconductor lasers. We theoretically demonstrate the amplitude and phase modulation of OIL-OPA elements by controlling the injection-locking parameters of the OIL lasers. When a Taylor window function is applied as the amplitude profile of the OPA transmitter, the sidelobe level decreases by 22 dB and the unsecured distance reduces 10 times compared to the case without the Taylor window function. In addition, the unsecured area factor becomes 0.8%.https://www.mdpi.com/2304-6732/8/11/469optically injection-locked laseroptical phased arrayoptical wireless communicationsecurity improvementsidelobe levelunsecured distance |
| spellingShingle | Anh-Hang Nguyen Jun-Hyung Cho Hyuk-Kee Sung Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers Photonics optically injection-locked laser optical phased array optical wireless communication security improvement sidelobe level unsecured distance |
| title | Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers |
| title_full | Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers |
| title_fullStr | Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers |
| title_full_unstemmed | Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers |
| title_short | Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers |
| title_sort | theoretical demonstration of security improvement of optical phased array based on optically injection locked lasers |
| topic | optically injection-locked laser optical phased array optical wireless communication security improvement sidelobe level unsecured distance |
| url | https://www.mdpi.com/2304-6732/8/11/469 |
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