Design of a dual hollow beam optical antenna based on a Fresnel lens-conical lens combination

• DOI: 10.1364/josaa.517287
• Publication Date: 2024-03-25T18:00:17Z
• Authors: Yunlong Li; Liang Zhong; Shuaikang Fu; Yan Qin; Jianing Liu; Ping Jiang; Huajun Yang
• Keywords: Cassegrain reflector; Fresnel lens; Cassegrain antenna

To improve the transmission efficiency of Cassegrain antennas and enable simultaneous signals with different wavelengths in antenna system, this study introduces Fresnel lenses conical front at transmitting end. Reflective mirrors focusing are introduced receiving A detailed description is provided design process for lens, as well impact various parameters on hollow radius when combined lens. Based laws vector reflection refraction, simulations performed to track propagation light through entire communication system lens pairs, providing plots under deflection off-axis conditions. Taking into account practical factors such chamfer, transmittance, reflectance, material dispersion, 1550 nm wavelength can still reach 93.45%. The proposed method not only improves antennas, but also enables information inner outer layers system.