Results 171 to 180 of about 187,475 (328)

Design and analysis of a multi-layer circuit absorber with ultra-wideband and polarization insensitivity. [PDF]

Sci Rep
Ghafourivayghan M, Shabunin S.
europepmc   +1 more source

Pseudomagnetic Control of Light Waves in the Electrically Tunable Photonic Crystals with Deformation Engineering

Laser &Photonics Reviews, EarlyView.
This work presents a triaxially deformed photonic crystal cavity on the SOI substrate, enabling the localization and resonating of photons via pseudomagnetic fields. Through coupling with Si waveguides and leveraging the thermo‐optic effect, electrically tunable pseudo‐magnetism‐induced optical resonances can be achieved in the photonic integrated ...
Zhipeng Qi, Hao Sun, Guohua Hu, Xiumin Song, Yaohui Sun, Wanghua Zhu, Bo Liu, Xuechao Yu, Francois M. Peeters, Yiping Cui   +9 more
wiley   +1 more source

Covert communication performance evaluation in UAV-assisted rate-splitting multiple access systems. [PDF]

PLoS One
Nhu NH, Bao LC, Minh BV, Tran M, Sang NQ.   +4 more
europepmc   +1 more source

Vortex Beam Lasing from III‐V Nanowires Epitaxially Grown on Silicon‐on‐Insulator

Laser &Photonics Reviews, EarlyView.
An epitaxially grown InGaAs nanowire photonic crystal laser on silicon‐on‐insulator is demonstrated to emit vortex beams carrying orbital angular momentum. Deforming the honeycomb lattice causes the band inversion effect and creates symmetry‐protected bound states in the continuum, enabling single‐mode lasing with a topological charge of −2 ...
Bogdan‐Petrin Ratiu, Ji Tong Wang, Kyle Netherwood, Tim Grieb, Andreas Rosenauer, Sang Soon Oh, Nicolae‐Coriolan Panoiu, Qiang Li   +7 more
wiley   +1 more source

MEMS‐Tunable Bilayer Plasmonic Metasurfaces for Dynamic Vortex Wave Plates

Laser &Photonics Reviews, EarlyView.
This work presents a MEMS‐tunable bilayer metasurface for dynamic vortex wave plates at near‐infrared wavelengths. By electrically tuning the separation between the BMS and the MEMS mirror, the device enables reconfigurable switching between l = 2 and l = −1 vortex modes, achieving >80% polarization conversion efficiency, fast response time (9 µs), and
Chuanshuo Wang, Lili Gui, Haonan Li, Paul C. V. Thrane, Hao Chen, Xianglong Mei, Yiyuan Xu, Fei Ding, Kun Xu, Sergey I. Bozhevolnyi, Chao Meng   +10 more
wiley   +1 more source

Exploiting luminescent solar concentrators in indoor visible light communication systems. [PDF]

Sci Rep
Cossu G, Gilli L, Oliviero L, Meucci M, Aresti M, Calamante M, Pucci A, Catani J, Ciaramella E.   +8 more
europepmc   +1 more source

Reclassifying Broadband Internet Access: Who Cares What Congress Wants Anyway? [PDF]

, 2015
Lemon, Jeremy D.
core   +1 more source

Terahertz All‐Dielectric Maxwell Fisheye Lens Waveguide Crossings via Transformation Optics

Laser &Photonics Reviews, EarlyView.
All‐silicon terahertz waveguide crossings based on Maxwell fisheye lenses are reshaped using transformation optics to interface with planar waveguides while reducing mode mismatch. Realized via subwavelength perforations in a single etching step, 2 × 2 and 3 × 3 crossings achieve broadband transmission with low loss and ultralow crosstalk across 220 ...
Nikolaos Xenidis, Joachim Oberhammer, Dmitry Lioubtchenko   +2 more
wiley   +1 more source

Dual-Hydrogen-Bonded Interfaces Unlock Record-High Efficiency and Stability in Eco-friendly Copper-Iodide Deep-Blue Light-Emitting Diodes. [PDF]

Research (Wash D C)
Pan T, Shen Y, Chen T, Xu R, Lai WY.
europepmc   +1 more source

Analysis of telecommunications services availability [PDF]

, 2003
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core