Results 11 to 20 of about 4,667 (157)
Grating-lobe-free optical phased array with 2-D circular sparse array aperture and high-efficiency phase calibration [PDF]
NanophotonicsAn optical phased array (OPA) with 2-D circular sparse array aperture has been proposed and demonstrated in the silicon integrated photonic platform. The sparse distribution of the antenna array can realize no grating lobes in 2-D full field of view (FOV)
Lian Daixin +5 more
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Methods for determining the phase difference of the output signals for the receiving elements of a phased antenna array in a radiophoton circuit with parallel and series pairwise connection of electro-optical modulators [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 Obtaining accurate phase values of the output signals for the receiving elements of a phased array antenna is one of the crucial issues relating to radio-photon technologies in radar and radio communication.
Yaroslav N. Gusenitsa +3 more
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Photonics, 2023 The small number of pixels in the current linear mode avalanche photodiode (LM-APD) array limits its three-dimensional (3D) imaging resolution. We use an optical phased array-based beam array subdivided pixel method to improve the 3D imaging resolution ...
Shuai Wang +7 more
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Underwater Wireless Laser-Based Communications Using Optical Phased Array Antennas
IEEE Photonics Journal, 2023 An underwater optical wireless communication system concept based on optical phased array antennas is presented. With this optical phased array, a laser beam can be electronically steered to adjust not only the azimuth and elevation angles, but also the ...
Ali Derakhshandeh +2 more
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Radial phased-locked Laguerre-Gaussian correlated schell-model beam array
Heliyon, 2022 A new beam array called radial phased-locked Laguerre-Gaussian correlated Schell-model (LGCSM) beam array is presented, the beamlet of this beam array is partially coherent beam with Laguerre Gaussian-Schell model correlation.
Yaotian Yan +5 more
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Vernier optical phased array lidar transceivers
Optics Express, 2022 Optical phased arrays (OPAs) which beam-steer in two dimensions (2D) are currently limited to grating row spacings well above a half wavelength. This gives rise to grating lobes along one axis which limit the field of view (FOV), introduce return signal ambiguity, and reduce the optical efficiency in lidar applications.
Nathan Dostart +7 more
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An Up/Downstream Shared Optical Beam Forming Network for Remote Phased Array Antenna
IEEE Photonics Journal, 2021 An up/downstream shared optical beam forming network based on wavelength-swept for remote phased array antenna is presented and experimentally demonstrated.
Yao Meng +4 more
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Microwave Photonic Array Radars
IEEE Journal of Microwaves, 2021 Phased array radars have remarkable advantages over radars with single-element antenna in terms of agility, flexibility, robustness, and reconfigurability.
Shilong Pan +3 more
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IEEE Photonics Journal, 2021 We propose the silicon photonic optical phased array (OPA) with large scanning angle by using polarization multiplexing. A Mach-Zehnder interferometer (MZI) switch together with a polarization splitter/rotator is utilized to select the ...
Xibo Yan +3 more
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Reprogrammable optical phase array
Applied Optics, 2007 A novel reprogrammable optical phase array (ROPA) device is presented as a reconfigurable electro-optic element. One specific application of the ROPA, a 1 x 6 electro-optic space switch, is fully described. Switching angles are within 2 degrees , and switching is achieved through a complementary metal-oxide semiconductor (CMOS) controlled, diffraction ...
Madeleine, Mony +6 more
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