Results 231 to 240 of about 6,742,680 (324)

Purely Equatorial Lasing in Spherical Liquid Crystal Polymer Microlasers with Bipolar Refractive Index Profile

Advanced Optical Materials, EarlyView.
Spherical liquid crystal polymer microlasers with a bipolar configuration confine lasing to a single equatorial plane, allowing precise control over where the laser emission is generated. The anisotropic refractive index profile additionally lifts the energy degeneracy of azimuthal whispering gallery modes, which causes a characteristic splitting into ...
David Ripp, Nachiket Pathak, Vera M. Titze, Catriona A. Thomson, Andreas Mischok, Marcel Schubert   +5 more
wiley   +1 more source

Linear and Nonlinear Optical Tuning With Sb2S3‐Based Metasurfaces

Advanced Optical Materials, EarlyView.
Sb2S3${\rm Sb}_2{\rm S}_3$ resonant metasurfaces provide large, reconfigurable optical modulation and tunable enhanced nonlinear emission across telecommunication wavelengths. Monolithic structures achieve 92% transmission modulation and 150 nm resonance tuning, while hybridization with silicon enables strong modulation at nearly half the switching ...
Amin Zamani, Meibao Qin, Gabriel Sanderson, Lu Zhang, Sara Moujdi, Qiwei Miao, Ze Zheng, Mohammadhossein Momtazpour, Christopher J. Mellor, Wending Zhang, Ting Mei, Zakaria Mansouri, Lei Xu, Mohsen Rahmani   +13 more
wiley   +1 more source

Preamble Injection-Based Jamming Method for UAV LoRa Communication Links. [PDF]

Sensors (Basel)
Wu T, Mao R, Du Y, Zhu Q, Wei S, Hu C.
europepmc   +1 more source

Extend-and-forward relaying through wireless frequency extension for sub-terahertz communication. [PDF]

Sci Rep
Güven E, Thivierge L, Frigon JF, Karabulut Kurt G.   +3 more
europepmc   +1 more source

Time Modulation-Based Multi-User Covert Communication. [PDF]

Entropy (Basel)
Jiang L, Zhang X, Chen Q, Wan X, Yang F, Yang G.   +5 more
europepmc   +1 more source

A dual-polarized RIS-assisted spatial modulation architecture for robust vehicular communications in urban environments. [PDF]

PLoS One
Lewis SE, Darshan MP, Kumar P, Simha G D G.   +3 more
europepmc   +1 more source

A Long-Range Distributed Antenna Method Based on Microwave-Photonics Frequency Synchronization. [PDF]

Entropy (Basel)
Teng H, Lin M, Han H, Gao H, Qin X, Chen B, Xie Y, He J, Liu B.   +8 more
europepmc   +1 more source