Results 111 to 120 of about 566,417 (282)

Application of Expurgated PPM to Indoor Visible Light Communications - Part I: Single-User Systems

open access: yes, 2013
Visible light communications (VLC) in indoor environments suffer from the limited bandwidth of LEDs as well as from the inter-symbol interference (ISI) imposed by multipath.
Brandt-Pearce, Maite, Noshad, Mohammad
core   +1 more source

Mode‐dependent Far‐field Radiation of Circularly Polarized Light by a Single Plasmonic Nanohelix

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
The numerical simulations explored the chiroptical response and far‐field radiation behaviors of single plasmonic nanoantennas transitioning into helical structures. This study highlights the ability of these plasmonic nanohelices to regulate the far‐field directionality of radiation power and circular polarization in plasmon‐exciton coupled systems ...
Yiou Cui   +10 more
wiley   +1 more source

Secure Mobile-Phone Based Visible Light Communications With Different Noise-Ratio Light-Panel

open access: yesIEEE Photonics Journal, 2018
We propose and demonstrate a visible light communication (VLC) system using a light-panel and a mobile-phone camera. We also propose the rolling-shutter-effect (RSE) pattern synchronization and demodulation algorithms. By using our developed mobile-phone
Chi-Wai Chow   +7 more
doaj   +1 more source

Recent Advances in Micro-LEDs Having Yellow-Green to Red Emission Wavelengths for Visible Light Communications. [PDF]

open access: yesMicromachines (Basel), 2023
James Singh K   +6 more
europepmc   +1 more source

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song   +8 more
wiley   +1 more source

Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge2Sb2Se4Te

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Chalcogenide optical PCMs have gathered interest for their potential in compact, non‐volatile optics and photonics. Free‐space PCM metasurfaces require new considerations from phase change memory that need to be addressed for reliable scale‐up. Several failure mechanisms pertaining to free‐space PCM devices and layout methods are isolated to prevent ...
Cosmin Constantin Popescu   +19 more
wiley   +1 more source

DRL-Based IRS-Assisted Secure Hybrid Visible Light and mmWave Communications

open access: yesIEEE Open Journal of the Communications Society
This paper explores a new advancement in physical layer security (PLS) techniques, focusing on the integration of Intelligent Reflecting Surfaces (IRS).
Danya A. Saifaldeen   +4 more
doaj   +1 more source

Editorial to the Special Issue on "Visible Light Communications, Networking, and Sensing". [PDF]

open access: yesSensors (Basel), 2021
Zvánovec S   +3 more
europepmc   +1 more source

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