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...

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Autores principales:	Anh-Hang Nguyen, Jun-Hyung Cho, Hyuk-Kee Sung
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	optically injection-locked laser optical phased array optical wireless communication security improvement sidelobe level unsecured distance Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/e7b613295fe24e3fbece5c2829f5d4bc
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spelling	oai:doaj.org-article:e7b613295fe24e3fbece5c2829f5d4bc2021-11-25T18:43:02ZTheoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers10.3390/photonics81104692304-6732https://doaj.org/article/e7b613295fe24e3fbece5c2829f5d4bc2021-10-01T00:00:00Zhttps://www.mdpi.com/2304-6732/8/11/469https://doaj.org/toc/2304-6732The 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%.Anh-Hang NguyenJun-Hyung ChoHyuk-Kee SungMDPI AGarticleoptically injection-locked laseroptical phased arrayoptical wireless communicationsecurity improvementsidelobe levelunsecured distanceApplied optics. PhotonicsTA1501-1820ENPhotonics, Vol 8, Iss 469, p 469 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	optically injection-locked laser optical phased array optical wireless communication security improvement sidelobe level unsecured distance Applied optics. Photonics TA1501-1820
spellingShingle	optically injection-locked laser optical phased array optical wireless communication security improvement sidelobe level unsecured distance Applied optics. Photonics TA1501-1820 Anh-Hang Nguyen Jun-Hyung Cho Hyuk-Kee Sung Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers
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%.
format	article
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
title	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_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_sort	theoretical demonstration of security improvement of optical phased array based on optically injection-locked lasers
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e7b613295fe24e3fbece5c2829f5d4bc
work_keys_str_mv	AT anhhangnguyen theoreticaldemonstrationofsecurityimprovementofopticalphasedarraybasedonopticallyinjectionlockedlasers AT junhyungcho theoreticaldemonstrationofsecurityimprovementofopticalphasedarraybasedonopticallyinjectionlockedlasers AT hyukkeesung theoreticaldemonstrationofsecurityimprovementofopticalphasedarraybasedonopticallyinjectionlockedlasers
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Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers

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