Results 51 to 60 of about 7,278,007 (215)

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li, Yuyuan Han, Aoxiang Chen, Pengpeng Li, Xinglin Zhu, Guanbao Zhao, Luohan Peng, Huaibin Zheng   +7 more
wiley   +1 more source

Mobil FSO activities in Europe and fading mitigation approaches [PDF]

, 2007
The increasing emergence of data services for mobile applications requires high-speed communication technologies. To this end, free-space optical (FSO) communications technology has the potential to outperform radio frequency (RF) systems.
Hennes Henniger, Giggenbach, Dirk, Henniger, Hennes, Bernhard Epple, Epple, Bernhard, Dirk Giggenbach   +5 more
core   +1 more source

Modeling of optical wave propagation through turbulent atmosphere using fractional approach for FSO wireless communication

Journal of Physics Communications, 2023
Free space optical (FSO) wireless communication has emerged as a viable alternative to the existing fiber optics and radio frequency (RF) communications due to its ability to operate in unlicensed spectrum, offering huge data handling capacities and ...
Abdullah Nafis Khan, Muhammad Zubair, Usman Younis   +2 more
doaj   +1 more source

Liquid Crystal Polymers as Intrinsically Magnetic and Programmable Soft Materials for Microrobotics

Small, Volume 22, Issue 42, 27 July 2026.
Liquid crystal polymers (LCPs) are proposed as intrinsically magnetic, programmable, soft materials for microrobotics. Magnetic torque‐driven manipulation of LCP microobjects is achieved and characterized in terms of the step‐out frequency, reaching ∼0.6 Hz in a ∼250 mT magnetic field. The orientation of LCP microobjects in the magnetic field and their
Alexandra Gruzdenko, Ignacio Becerra Osorio, Max de Sain, Albert P. H. J. Schenning, Jaap M. J. den Toonder, Michael G. Debije   +5 more
wiley   +1 more source

BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence [PDF]

, 2009
Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations.
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Popoola, Wasiu O., Ghassemlooy , Zabih   +3 more
core   +1 more source

An Overview of Free Space Optics with Quantum Cascade Lasers [PDF]

, 2014
The article presents an overview of the work on quantum cascade lasers application in free space optical systems (Free Space Optics - FSO). There are discussed the main issues of the open-space laser communications and their practical construction ...
Mikołajczyk, Janusz
core   +3 more sources

Interference and noise analysis for hybrid FSO/RF-based 6G mobile backhaul

ETRI Journal, 2022
Optical wireless communication, or free space optics, is a promising solution for backhauls in sixth-generation mobile systems. However, the susceptibility of optical links to weather conditions has led to FSO links being furnished with radio frequency ...
Soyinka Nath, Shree Prakash Singh, Sujata Sengar   +2 more
doaj   +1 more source

Land Cover Shapes Altitudinal Land Surface Warming Patterns Across Switzerland

Earth's Future, Volume 14, Issue 7, July 2026.
Abstract Mountainous regions are characterized by steep vertical gradients in temperature which in turn shape land cover and ecosystems that are differently affected by climate change. Here, we show that both stable and changing land covers have an important influence on land surface temperature (LST) trends in Switzerland, based on almost four decades
Dirk Scherler, Deniz Gök, Hendrik Wulf
wiley   +1 more source

Curved Track Analysis of FSO Link for Ground-to-Train Communications [PDF]

, 2014
In this work, a free space optical (FSO) link for the ground-to-train (G2T-FSO) communications is proposed. Analytical analysis is carried out for the curved rail tracks.
Poliak, Juraj, Ghassemlooy, Zabih, Paudel, Rupak, R. Paudel, O. Wilfert, Z. Ghassemlooy, E. Leitgeb, Leitgeb, Erich, J. Poliak, Wilfert, Otakar   +9 more
core  

Constrained Deep Reinforcement Learning for Joint Energy-Efficient Power Control and Link Switching in Hybrid FSO-RF Systems

IEEE Access
Hybrid free space optics-radio frequency (FSO-RF) backhaul systems offer a solution to high capacity, weather-robust wireless infrastructure; however, jointly optimising transmit power and link selection under dynamic atmospheric conditions remains ...
Shirley N. Musima, Philip K. Langat, Nicholas O. Oyie   +2 more
doaj   +1 more source