Results 21 to 30 of about 9,331 (329)
Photonic wideband phased array: an optical time steered antenna based on a new true time delay unit
, 2006 L’attività di ricerca svolta durante il corso di dottorato e descritta dettagliatamente all’interno della tesi è stata diretta al progetto di una innovativa rete ottica di formazione del fascio per antenne a schiera a banda larga esenti dal fenomeno del ...
Claudio Curcio
openalex +2 more sources
Off-chip beam steering with a one-dimensional optical phased array on silicon-on-insulator [PDF]
Optics Letters, 2009 Optical phased arrays are versatile components enabling rapid and precise beam steering. An integrated approach is followed in which a 1D optical phased array is fabricated on silicon-on-insulator. The optical phased array consists of 16 parallel grating
Karel Van Acoleyen +2 more
exaly +2 more sources
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
doaj +2 more sources
Internally sensed optical phased array
Optics Letters, 2016 Extending phased array techniques to optical frequencies is challenging because of the considerably smaller wavelengths and the difficulty of stabilizing the optical path lengths of multiple emitters to this level of precision.
Sutton, Andrew J +7 more
core +4 more sources
All-Solid-State Beam Steering via Integrated Optical Phased Array Technology [PDF]
Micromachines, 2022 Light detection and ranging (LiDAR), combining traditional radar technology with modern laser technology, has much potential for applications in navigation, mapping, and so on.
Shi Zhao, Jingye Chen, Yaocheng Shi
doaj +2 more sources
Scalable Low-latency Optical Phase Sensor Array [PDF]
Optica, 2023 Optical phase measurement is critical for many applications, and traditional approaches often suffer from mechanical instability, temporal latency, and computational complexity. In this paper, we describe compact phase sensor arrays based on integrated photonics, which enable accurate and scalable reference-free phase sensing in a few measurement steps.
Zhanghao Sun +7 more
openalex +3 more sources
Wide-angle non-uniform optical phased array using compact and efficient antenna design [PDF]
Scientific ReportsIn the need for a more compact and efficient optical phased array with a wide steering beam for LIDAR applications, a wide steering array with high resolution is desirable.
Omar E. Elsheikh, Mohamed A. Swillam
doaj +2 more sources
Multi-Beam Focusing and Deflecting Characteristics of Liquid Crystal Optical Phased Array
PhotonicsAs a programmable optical device, a liquid crystal optical phased array (LCOPA) has many unique applications. Multi-beam fan-out is one of the novel application cases.
Xue Xu, Lin Xu, Xitong Liang, Jun Dai
doaj +2 more sources
Optimization of a programmable λ/2-pitch optical phased array [PDF]
NanophotonicsA challenge in optical phased arrays (OPAs) is to achieve single-lobe emission using densely spaced emitters without incurring inter-waveguide optical crosstalk.
Sharma Ankita +7 more
doaj +2 more sources
Applied Physics ExpressWe report a coherent laser transmitter for free space optical communications based on multiwavelength coherent beam combining. We performed 5.6 Gbps free-space optical communications using a two-element optical phased array with three wavelengths ...
Eisuke Haraguchi +6 more
doaj +2 more sources