Results 21 to 30 of about 4,932 (250)
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
doaj +1 more source
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
openaire +4 more sources
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
doaj +1 more source
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
doaj +1 more source
Large-Scale Integrated Multi-Lines Optical Phased Array Chip
IEEE Photonics Journal, 2020 We design and integrate four optical phased arrays (OPAs) in a single chip. Each OPA possesses different output grating period. Furthermore, we use optical switches to select one or more OPAs for beam scanning. We demonstrate the longitudinal scanning by
Lan-Xuan Zhang +11 more
doaj +1 more source
Applied Sciences, 2023 By introducing the arrayed waveguide router (AWGR) optical true time-delay (OTTD) architecture in bent-pipe satellite optical inter-link to optically assist the RF phased array in Low-earth orbit satellites will extend the multi-hop bent-pipe satellite ...
Shiyi Xia +7 more
doaj +1 more source
First Demonstration of Dynamic High-Gain Beam Steering With a Scanning Lens Phased Array
IEEE Journal of Microwaves, 2022 We report on the first demonstration of dynamic beam steering using a scanning lens phased array. A scanning lens phased array relies on a combination of mechanical and electrical phase shifting to dynamically steer a high-gain beam beyond the grating ...
Sjoerd Bosma +4 more
doaj +1 more source
Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array
IEEE Photonics Journal, 2021 In this work, a compact sub-wavelength-pitch silicon waveguide array with low crosstalk is proposed and analyzed. The crosstalk is suppressed by periodic silicon nano-blocks symmetrically arranged along the silicon strip waveguides.
Guangzhu Zhou +3 more
doaj +1 more source
FSO Receiver With Adaptive Alignment Based on Pure Phased Holographic Imaging
Frontiers in Physics, 2021 This paper proposes a free space optical communication (FSO) receivier system with adaptive alignment based on pure phase holographic imaging. During the frame header transmission period, the optical phased array in this system performs specific ...
Haibo Wang, Zaichen Zhang, Yidi Zhang
doaj +1 more source
A review of research on optical true time delay technology
Journal of the European Optical Society-Rapid PublicationsLight controlled phased array has the advantages of fast response speed, compact system, diverse functions, and flexible control, and has been widely applied in many scientific and technological fields.
An Ting +4 more
doaj +1 more source