Results 31 to 40 of about 7,914 (285)
Broadband Operation of an InP Optical Phased Array
IEEE Photonics Technology Letters, 2022 We demonstrate the broadband operation and beam calibration over 70nm tuning range of an optical phased array (OPA) fabricated in a generic InP photonic integration platform, which enables multi-wavelength OPA operation. The broadband performance was demonstrated on an 8-channel OPA, whose calibration and phase modulator characterization were executed ...
M. Gagino +4 more
openaire +2 more sources
Circular Optical Phased Arrays with Radial Nano-Antennas
Nanomaterials, 2022 On-chip optical phased arrays (OPAs) are the enabling technology for diverse applications, ranging from optical interconnects to metrology and light detection and ranging (LIDAR). To meet the required performance demands, OPAs need to achieve a narrow beam width and wide-angle steering, along with efficient sidelobe suppression.
Liu, Qiankun +5 more
openaire +3 more sources
Off-chip beam steering with a one-dimensional optical phased array on silicon-on-insulator [PDF]
, 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
Baets, Roel +5 more
core +1 more source
An Optical Phased Array for LIDAR
Journal of Physics: Conference Series, 2016 We have previously demonstrated the development of an Optical Phased Array (OPA) micromechanical system (MEMS) used for beam steering, which shows great advantages over previous mechanisms such as opto-mechanical, acousto-optical (AO) or electro-optical (EO).
Y Wang, M C Wu
openaire +1 more source
Computational Analysis of a 200 GHz Phased Array Using Lens-Coupled Annular-Slot Antennas
, 2022 We report the design, simulation, and analysis of a THz phased array, using lens-coupled annular-slot antennas (ASAs) for potential beyond 5G or 6G wireless communications.
Lei Liu, Yijing Deng, Peizhao Li, Yu Shi
core +1 more source
Tutorial: Terahertz beamforming, from concepts to realizations
APL Photonics, 2018 The terahertz range possesses significant untapped potential for applications including high-volume wireless communications, noninvasive medical imaging, sensing, and safe security screening.
Daniel Headland +4 more
doaj +1 more source
Optical physics of imaging and interferometric phased arrays [PDF]
SPIE Proceedings, 2006 Microwave, submillimetre-wave, and far-infrared phased arrays are of considerable importance for astronomy. We consider the behaviour imaging phased arrays and interferometric phased arrays from a functional perspective. It is shown that the average powers, field correlations, power fluctuations, and correlations between power fluctuations at the ...
Withington, Stafford +2 more
openaire +2 more sources
Beam Steering with a Nonlinear Optical Phased Array Antenna [PDF]
Nano Letters, 2019 Transition metal dichalcogenides (TMDCs) exhibit high second harmonic (SH) generation in the visible due to their non-centrosymmetric crystal structure in odd-layered form and direct bandgap transition when thinned down to a monolayer. In order to emit the SH radiation into a desired direction one requires a means to control the phase of the in-plane ...
Sebastian Busschaert +5 more
openaire +5 more sources
Aperture scalable liquid crystal optically duplicated array of phased array
, 2019 To achieve non-mechanical laser beam steering in the scenario of long distance propagation such as free-space laser communication between satellites, large aperture size is an inevitable issue to be considered to narrow the divergence angle of the output
He, Xiaoxian +8 more
core +1 more source
Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer
Molecular Oncology, EarlyView.Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni +11 more
wiley +1 more source