Results 141 to 150 of about 461,573 (294)

Laser communications through the atmosphere [PDF]

Atmospheric properties affecting laser propagation with reference to optical communications are reviewed. Some of the optical space network configurations and various diversity techniques that may need to be utilized to develop robust bi-directional ...
Churnside, J. H., Shaik, Kamran
core   +1 more source

Spin Laser Local Oscillators for Homodyne Detection in Coherent Optical Communications. [PDF]

Micromachines (Basel), 2021
Yokota N, Yasaka H.
europepmc   +1 more source

Nanocrystal Quality–Controlled Scintillation in Porous YAG:Ce Aerogels

Advanced Optical Materials, EarlyView.
High‐temperature thermal treatment of YAG:Ce nanoscintillator aerogels increases light yield under ionizing radiation by up to eightfold without affecting timing performance. Additionally, low‐temperature atmospheric treatments reversibly modify the cerium oxidation state, revealing strong defect sensitivity and offering new strategies to optimize ...
Pavlo Mai, Yannis Cheref, Raphael Marie‐Luce, Frédéric Lerouge, Julien Houel, Gilles Ledoux, Alice Perret, Francesca Cova, Mauro Fasoli, Benoit Sabot, Frédéric Chaput, Christophe Dujardin   +11 more
wiley   +1 more source

Analysis and Experiment of Wireless Optical Communications in Applications Dedicated to Mobile Devices with Applicability in the Field of Road and Pedestrian Safety. [PDF]

Sensors (Basel), 2022
Zadobrischi E.
europepmc   +1 more source

Phototunable Polarization Volume Gratings Driven by Chiral Hydrazone Switches

Advanced Optical Materials, EarlyView.
Chiral hydrazone photoswitches incorporated into polarization volume gratings enable light‐driven, reversible modulation of optical properties. UV and blue light irradiation reversibly alter the hydrazone isomer ratio, leading to tunable diffraction efficiency and spectral response across the visible spectrum.
Artem Boichuk, Lauri Uosukainen, Indu Bala, Ivan Aprahamian, Arri Priimagi   +4 more
wiley   +1 more source

Peta-bit-per-second optical communications system using a standard cladding diameter 15-mode fiber. [PDF]

Nat Commun, 2021
Rademacher G, Puttnam BJ, Luís RS, Eriksson TA, Fontaine NK, Mazur M, Chen H, Ryf R, Neilson DT, Sillard P, Achten F, Awaji Y, Furukawa H.   +12 more
europepmc   +1 more source

Selective Reflection of Chiral Ferroelectric Nematic Liquid Crystals Tuned by Electric Field Along the Helix Axis

Advanced Optical Materials, EarlyView.
It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel, Rohan Dharmarathna, James T. Gleeson, Robert J. Twieg, Samuel Sprunt, Antal Jákli   +5 more
wiley   +1 more source

Study of the effects of atmospheric turbulence on laser communications systems, volume 1 Interim report [PDF]

High altitude aircraft test for visible laser communication and analysis of errors in optical communications experiment due to flight path ...
Webb, W. E.
core   +1 more source

Arc-Induced Long-Period Fiber Gratings at INESC TEC. Part II: Properties and Applications in Optical Communications and Sensing. [PDF]

Sensors (Basel), 2021
Rego G, Caldas P, Ivanov OV.
europepmc   +1 more source

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source