Results 31 to 40 of about 2,620,500 (282)

Deep-Learning Assisted Control of Optical Phased Array: A Case Study

IEEE Access, 2022
Modern raster scanning techniques and single pixel applications require a precise control of the field profiles radiated by Optical Phased Arrays, which can be controlled by external electrical signals modifying the optical paths inside these devices. In
Daniele Savio, Paolo Bardella
doaj   +1 more source

A novel deconvolution beamforming algorithm for virtual phased arrays [PDF]

, 2013
Beamforming techniques using phased microphone arrays are one of the most common tools for localizing and quantifying noise sources. However, the use of such devices can result in a series of well-known disadvantages regarding, for instance, their very ...
Fernandez Comesana, Daniel, Fernandez Grande, Efren, Holland, Keith R., Tiana Roig, Elisabet   +3 more
core   +1 more source

Phase Calibration of On-Chip Optical Phased Arrays via Interference Technique

IEEE Photonics Journal, 2020
Optical phased arrays (OPAs) are promising in various applications owing to their excellent beam steering performance but suffer from the random initial phases ruining the beam patterns. In this work, an interference-based calibration method to align the
Haiyang Zhang, Zixuan Zhang, Chao Peng, Weiwei Hu   +3 more
doaj   +1 more source

Arrays of Sub-Terahertz Cryogenic Metamaterial

Applied Sciences, 2021
Integrated quasi-optical cryogenic terahertz receivers contain arrays of detectors, quasi-optical filters, interferometers, and other metamaterials. Matrices of quasi-optical band-pass, low-pass, and high-pass filters, Fabry–Perot grid interferometers ...
Mikhail Tarasov, Aleksandra Gunbina, Artem Chekushkin, Vyacheslav Vdovin, Aleksei Kalaboukhov   +4 more
doaj   +1 more source

Towards large-scale InP optical phased arrays

, 2022
Scalability is crucial in optical phased arrays (OPAs) because the number of channels determines the range and beam forming characteristics. We discuss the challenges towards large-scale OPAs based on indium phosphide, enabling amplitude and phase ...
Dolores Calzadilla, Victor; id_orcid, Williams, Kevin A., Lemaitre, Florian, Gagino, Marco; id_orcid   +3 more
core   +1 more source

Phased arrays: A strategy to lower the energy threshold for neutrinos

EPJ Web of Conferences, 2017
In-ice radio arrays are optimized for detecting the highest energy, cosmogenic neutrinos expected to be produced though cosmic ray interactions with background photons.
Wissel Stephanie, Avva Jessica, Bechtol Keith, Chesebro Tyler, Cremonesi Linda, Gupta Anusha, Ludwig Andrew, Messino Wesley, Miki Christian, Nichol Ryan, Oberla Eric, Romero-Wolf Andrew, Saltzberg David, Schlupf Chandler, Shipp Nora, Varner Gary, Vieregg Abigail   +16 more
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Vertically coupled dielectric nanoantenna on a multilayer silicon platform for efficient out-of-plane scattering [PDF]

EPJ Web of Conferences
We present a silicon nitride photonic nanoantenna enabling efficient waveguide-to-free-space coupling. Vertically coupled to a silicon waveguide, the antenna, with a radius of 750 nm, achieves 3 dB scattering efficiency for high-density optical phased ...
Salhi Sarra, Alonso-Ramos Carlos, Vivien Laurent, Cassan Eric, Melati Daniele   +4 more
doaj   +1 more source

Polarization Effect on the Performance of On-Chip Wireless Optical Point-to-Point Links

Applied Sciences, 2023
Optical on-chip wireless interconnection is an emerging technology that aims to overcome the communication bottleneck in computing architectures and in which multiple processing units are exploited for data-intensive applications.
Giovanna Calò, Gaetano Bellanca, Franco Fuschini, Marina Barbiroli, Velio Tralli, Vincenzo Petruzzelli   +5 more
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On-chip wireless interconnection through reconfigurable optical phased arrays

, 2022
In this paper we report the design of 3 × 3 wireless routers, based on transmitting and receiving integrated Optical Phased Arrays (OPAs), which allow on-chip optical wireless interconnections.
Bertozzi D., Gabriele L., Fuschini F., Barbiroli M., Nanni J., Petruzzelli V., Serafino G., Tralli V., Bellanca G., Calo G., Calo Giovanna, Petruzzelli Vincenzo   +11 more
core   +1 more source

Novel Measures for Thermal Management of Silicon Photonic Optical Phased Arrays

IEEE Photonics Journal, 2019
Silicon photonics has become a promising technology for fabrication of compact, highly integrated systems. When dealing with phase sensitive silicon photonic components, however, temperature control and in particular, reduction of temperature gradients ...
Pedro Andrei Krochin Yepez, Ulrike Scholz, Jan Niklas Caspers, Andre Zimmermann   +3 more
doaj   +1 more source