Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Xuefang, Zhou"'
Publikováno v:
Photonic Sensors, Vol 15, Iss 2, Pp 1-13 (2024)
Abstract To improve the sensitivity measurement of temperature sensors, a fiber optic temperature sensor structure based on the harmonic Vernier effect with two parallel fiber Sagnac interferometers (FSIs) is designed, and theoretical analysis and ex
Externí odkaz:
https://doaj.org/article/f38627d3e6b24b17a7befa7a9bc213cf
Publikováno v:
AIP Advances, Vol 14, Iss 8, Pp 085101-085101-14 (2024)
Security issues and privacy issues are serious problems facing today’s society, especially in image security, where privacy protection plays a pivotal role. To improve the security of images, we propose an image encryption algorithm based on optica
Externí odkaz:
https://doaj.org/article/b99f0e73757b4440bcb67dcc465a376f
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 4, Pp 1-8 (2024)
The orbital angular momentum (OAM) states are used for OAM modulation and OAM multiplexing in free-space optical (FSO) communication systems to enhance the transmission quality and capacity. Although a few impactful methods had been developed to meas
Externí odkaz:
https://doaj.org/article/a1e8700f2a45427eb46ff3d564efcdd2
Autor:
Mengmeng Xu, Miao Hu, Zerong Li, Jinxiu Wang, Jiaxin Fu, Shaokun Wang, Yingying Ji, Haozhen Li, Meihua Bi, Xuefang Zhou, Sunqiang Pan, Chong Liu
Publikováno v:
Photonics, Vol 11, Iss 6, p 558 (2024)
The theoretical and experimental characteristics of all-solid-state self-mode-locked burst pulse lasers are investigated in this study. The time–frequency and spectrum analyses of the lasers incorporating Fabry–Pérot (F-P) structures are present
Externí odkaz:
https://doaj.org/article/2acb6bea434f44068a94149863a536b8
Publikováno v:
Aerospace, Vol 11, Iss 4, p 254 (2024)
The complex layout of the airport surface, coupled with interrelated vehicle behaviors and densely mixed traffic flows, frequently leads to operational conflict risks. To address this issue, research was conducted on the recognition of characteristic
Externí odkaz:
https://doaj.org/article/90e5675730154d5492ee8759bf0d007d
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 2, Pp 1-6 (2023)
A double Sagnac interferometer (DSI) and vernier effect sensor for relative humidity (RH) is proposed and experimentally implemented, in which two single Sagnac interferometers (SI1 and SI2) cascaded in parallel to construct the structure of the sens
Externí odkaz:
https://doaj.org/article/9bd0683cbaa04c04a4f42adce04345ec
Publikováno v:
Applied Sciences, Vol 13, Iss 24, p 13292 (2023)
To further enhance fairness in the allocation of en-route space–time resources in the collaborative trajectory selection program, a study on the plan preferences between air traffic control (ATC) and airlines in the selection process of the final p
Externí odkaz:
https://doaj.org/article/d225526f042845e09db0673551964129
Autor:
Yuting Zhang, Miao Hu, Mengmeng Xu, Hengfeng Yan, Chong Liu, Long Chen, Haozhen Li, Meihua Bi, Xuefang Zhou
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-6 (2022)
A power balanced dual-wavelength laser (DWL) based on the Nd:GdVO4 crystal is presented. The orthogonally polarized gain spectral evolution of the Nd:GdVO4 crystal versus the temperature is studied, and the power balancing conditions of the DWLs are
Externí odkaz:
https://doaj.org/article/6ed0f8b98b144eef8bcd6853af16725a
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-10 (2022)
In this paper, we design an optical chaotic secure communication system with multi-dimensional keys and a complex entropy source, which can allow secure communication working in different modes such as unicast, multicast, and broadcast. In the propos
Externí odkaz:
https://doaj.org/article/6b22208db9cc45e0a73b48347415bcd4
Autor:
Yizhi Ke, Miao Hu, Mengmeng Xu, Mengying Xia, Huimin Zhou, Qiliang Li, Xuefang Zhou, Guowei Yang, Meihua Bi
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 1, Pp 1-7 (2021)
A tunable pulsed dual-wavelength laser is presented based on an Nd:YVO4/Nd:GdVO4 combined crystals pair as amplifying medium. By employing pulse width adjustment of an 808 nm laser diode pumping, and a Cr4+:YAG crystal for Q-switching, synchronized d
Externí odkaz:
https://doaj.org/article/bdc0ea23c98641038fc30d9e408e55a7