Results 181 to 190 of about 45,040 (309)

Robust high-capacity free-space optical communication using OAM-based structured light and intelligent adaptive signal processing. [PDF]

Sci Rep
Ahmad M, Hayat B, Fang M, Wang C, Xie G, Huang Z.   +5 more
europepmc   +1 more source

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Revealing the Transmission Hologram's Refractive Index Profile Stored in a Photohydrogel: A Structural Characterization

Advanced Optical Materials, EarlyView.
A theoretical model is developed to visualize three‐dimensional refractive index profiles in transmission holographic gratings. In this work, it is applied to photopolymerizable hydrogels, enabling detailed analysis of the internal structure of recorded holograms and their evolution under different degradation conditions.
Belén Nieto‐Rodríguez, Manuel G. Ramírez, José Carlos García‐Vázquez, Tomás Lloret, Inmaculada Pascual   +4 more
wiley   +1 more source

Optical free space feedforward non-linearity correction system [PDF]

Recent years have seen unprecedented growth in the popularity and deployment of mobile phones. As this continues, so the strain on existing mobile cellular radio network has also increased, leading to the need to investigate new technologies to relieve ...
Sweet, Cameron
core  

High-Precision Tracking of Free-Space Optical Communication System on Mobile Platforms

We propose a new free-space optical (FSO) communication system for moving platform tracking, which can achieve high precision aiming and tracking. Our prototype system consists of three parts.
Jianguo Liu, Ning Sun, Yuanda Wu, Yuehui Wang   +3 more
core   +1 more source

Coverage Analysis of 5G Intelligent High-Speed Railway System Based on Beamwidth-Adaptive Free-Space Optical Communication. [PDF]

Sensors (Basel)
Dong S, Zeng ZZ, Zhang DT, Sun ZQ, Wang JY.   +4 more
europepmc   +1 more source

Reconfigurable beam system for non-line-of-sight free-space optical communication. [PDF]

Light Sci Appl, 2019
Cao Z, Zhang X, Osnabrugge G, Li J, Vellekoop IM, Koonen AMJ.   +5 more
europepmc   +1 more source

An Algorithm of Wireless Sensor Network Based on Free Space Optical Communication

, 2017
Na Zhang
openalex   +2 more sources

Naphthyridine‐Based Donor–Acceptor Boron Difluoride Complexes Targeting Red Emission in Organic Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Four donor–acceptor boron difluoride complexes based on triphenylamine donor and a naphthyridine acceptor units were synthesized, studied, and applied as OLED emitters. They exhibit pronounced intramolecular charge transfer character, balanced charge transport properties, and tunable emission. Near‐unity PLQYs are achieved for selected compounds, while
Omar Lahna, Stepan Kutsiy, Dmytro Volyniuk, Roman Luboradzki, Elina Andresen, Ute Resch‐Genger, Juozas V. Grazulevicius, Pavlo Stakhira, Mykhaylo A. Potopnyk   +8 more
wiley   +1 more source