Results 21 to 30 of about 2,176 (250)
Topology and Polarization of Optical Vortex Fields from Atomic Phased Arrays
Applied Sciences, 2023 We developed a theoretical formalism for the generation of optical vortices by phased arrays of atoms. Using the Jacobi–Anger expansion, we demonstrated the resulting field topology and determined the least number of individual atoms necessary for the ...
Hao Wang, Andrei Afanasev
doaj +3 more sources
Reconfigurable free-space mode generation and detection enabled by an active photonic integrated circuit coupled to a passive mode-selective interface [PDF]
Communications PhysicsOptical mode-sorting and generation are used for a wide range of quantum, sensing and communication applications. High-speed switching between mode sets would allow photonics systems to react to changes in propagation channel in real time.
Aleksandr Boldin +7 more
doaj +2 more sources
4 × 4 Integrated Switches Based on On-Chip Wireless Connection through Optical Phased Arrays
Photonics, 2023 Optical Wireless Networks on-Chip are an emerging technology recently proposed to improve the interconnection between different processing units in densely integrated computing architectures. In this work, we propose a 4 × 4 optical wireless switch (OWS)
Giovanna Calò +6 more
doaj +3 more sources
Circular Optical Phased Array with Large Steering Range and High Resolution
Sensors, 2022 Light detection and ranging systems based on optical phased arrays and integrated silicon photonics have sparked a surge of applications over the recent years.
Daniel Benedikovič +6 more
doaj +1 more source
Integrated circular optical phased array [PDF]
EPJ Web of Conferences, 2021 Existing OPAs are typically based on 2D rectangular arrays or 1D linear arrays. Both approaches present a limited field-of-view (FOV) due to the presence of the grating lobes when the element spacing is larger than λ/2.
Liu Qiankun +5 more
doaj +1 more source
Free-Space Applications of Silicon Photonics: A Review
Micromachines, 2022 Silicon photonics has recently expanded its applications to delivering free-space emissions for detecting or manipulating external objects. The most notable example is the silicon optical phased array, which can steer a free-space beam to achieve a chip ...
Chung-Yu Hsu +2 more
doaj +1 more source
Optically Synchronized Phased Arrays in CMOS [PDF]
IEEE Journal of Solid-State Circuits, 2022 Optical synchronization of large-span arrays offers significant benefits over electrical methods in terms of the weight, cost, power dissipation, and complexity of the clock distribution network. This work presents the analysis and design of the first phased array transmitter synchronized using a fully monolithic CMOS optical receiver. We demonstrate a
Matan Gal-Katziri +3 more
openaire +2 more sources
A Review of Semiconductor-Based Monolithic Optical Phased Array Architectures
IEEE Open Journal of the Solid-State Circuits Society, 2021 Semiconductor-based monolithic optical phased arrays (OPA) enable optical beam-steering for lidar and 3D imaging, free-space optical communications, projection and 3D holographical displays, and neural probes among many other possible applications.
Hossein Hashemi
doaj +1 more source
Temperature Dependence of the Steering Angles of a Silicon Photonic Optical Phased Array
IEEE Photonics Journal, 2020 Silicon photonic optical phased arrays leveraging from the well established CMOS fabrication process have become promising candidates to realize miniaturized beam steering systems.
Pedro Andrei Krochin Yepez +2 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