Results 91 to 100 of about 10,131,863 (310)
Bit error rate measurement of free space optical communication links under laboratory controlled conditions [PDF]
, 2011 This paper outlines the experimental investigation of the fog effect on the bit error rate (BER) performance of the free space optical (FSO) communication link under a controlled laboratory environment.
Ghassemlooy, Zabih +5 more
core
On‐Chip Photonic Neural Network Architectures
Advanced Optical Materials, EarlyView.This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong +7 more
wiley +1 more source
Channel Correlation-Based Adaptive Power Transmission for Free-Space Optical Communications
PhotonicsFree-space optical (FSO) communication has received widespread attention as a high-bandwidth, low-latency communication technique. However, the scintillation effect caused by atmospheric turbulence leads to intensity fluctuations of the transmission ...
Bai-Shan Zhao +2 more
doaj +1 more source
Physical-Layer Security in Orbital Angular Momentum Multiplexing Free-Space Optical Communications
IEEE Photonics Journal, 2016 The physical-layer security of a line-of-sight (LOS) free-space optical (FSO) link using orbital angular momentum (OAM) multiplexing is studied. We discuss the effect of atmospheric turbulence to OAM-multiplexed FSO channels.
Xiaole Sun, Ivan B. Djordjevic
doaj +1 more source
Frontier Progress of Unmanned Aerial Vehicles Optical Wireless Technologies
Sensors, 2020 With the continuous maturity of unmanned aerial vehicles (UAV) in materials, communications, and other related technologies, the UAV industry has developed rapidly in recent years.
Jupeng Ding +4 more
doaj +1 more source
Optical-SDMA for Broadband Aeronautical Communications" [PDF]
, 2003 Broadband communication for aircraft passengers is facing one of the most promising markets of near future. While currently systems introduced in L and Ku band are already limited in bandwidth considering service provisioning to several airline fleets ...
Giggenbach, Dirk +3 more
core
, 2022 The limited bandwidth and security provided by radio frequency communications between the ground and space can be overcome with optical communications. The smaller beam divergence and high carrier frequency increase the bandwidth and brings with it the ...
Kruzins, E +5 more
core +1 more source
Advanced Optical Materials, EarlyView.A novel hydrogen‐bonded organic framework (HOF) based on perylene diimide (PDI) is synthesized, structurally and spectroscopically characterized. Its photophysical behavior highlights how supramolecular organizations govern the optical properties, including emission from monomers, aggregates, and excimer‐like species. Structural transformations induced
Mario de la Hoz Tomás +9 more
wiley +1 more source
Experimental Channel Modeling of Free-Space Optical Communications Under Atmospheric Turbulence
IEEE Open Journal of the Communications SocietyThis paper investigates the statistical modeling of atmospheric turbulence-induced fading in free space optical (FSO) communication systems via using a 400-m round-trip retro-reflected urban FSO testbed. Especially, we compare the theoretical FSO channel
Tae-In Oh, Byungju Lim, Young-Chai Ko
doaj +1 more source
Controlling the Spatial Coherence of an Optical Source Using a Spatial Filter
Applied Sciences, 2018 This paper presents the theory for controlling the spectral degree of coherence via spatial filtering. Starting with a quasi-homogeneous partially coherent source, the cross-spectral density function of the field at the output of the spatial filter is ...
Milo W. Hyde
doaj +1 more source