Results 11 to 20 of about 852,457 (267)

Thermally tunable add-drop filter based on valley photonic crystals for optical communications [PDF]

open access: yesNanophotonics
Valley photonic crystals (VPCs) provide an intriguing approach to suppress backscattering losses and enable robust transport of light against sharp bends, which could be utilized to realize low-loss and small-footprint devices for on-chip optical ...
Sun Lu   +8 more
doaj   +3 more sources

Novel structure of optical add/drop filters and multi-channel filter based on photonic crystal for using in optical telecommunication devices [PDF]

open access: closedJournal of Optoelectronical Nanostructures, 2019
In this paper, Using a 2D photonic crystal and a novel square ring resonator,several compact and simple structures have been introduced in the present paper toconstruct optical add/drop filters and multi-channel filter.
Vahid Fallahi, Mahmood Seifouri
doaj   +2 more sources

Variability of the Rain Drop Size Distribution : Stochastic Simulation and Application to Telecommunication Microwave Links

open access: gold, 2012
Precipitation is an important component of the Earth' water cycle and needs to be carefully monitored. Its large variability over a wide range of spatial and temporal scales must be taken into account. For example, hydrological models require accurate rainfall estimates at high spatial and temporal resolutions (e.g., 1 km and 5 min or higher ...
Marc Schleiss
openaire   +3 more sources

Optical Limiting in a Novel Photonic Material—DNA Biopolymer Functionalized with the Spirulina Natural Dye [PDF]

open access: yesMolecules
The results of an experimental comparative study on absorptive nonlinear optical properties of deoxyribonucleic acid (DNA)–cetyltrimethylammonium chloride (CTMA) biopolymer functionalized with spirulina natural dye, as solutions in butanol, and on the ...
Petronela Gheorghe, Adrian Petris
doaj   +2 more sources

A year of attenuation data from a commercial dual-polarized duplex microwave link with concurrent disdrometer, rain gauge, and weather observations [PDF]

open access: yesEarth System Science Data, 2021
Commercial microwave links (CMLs) in telecommunication networks can provide relevant information for remote sensing of precipitation and other environmental variables, such as path-averaged drop size distribution, evaporation, or humidity.
A. Špačková   +6 more
doaj   +1 more source

Rain Attenuations Based on Drop Size Distribution (DSD) Model and Empirical Model at Low THz Frequencies

open access: yesElectronics, 2023
Rain attenuation based on the drop size distribution (DSD) with different rainfall rates (R) at low THz frequencies is investigated in this paper. The rain attenuation is calculated using the DSD measured for one year and the extinction cross-section ...
Yongho Kim   +5 more
semanticscholar   +1 more source

OpenMRG: Open data from Microwave links, Radar, and Gauges for rainfall quantification in Gothenburg, Sweden [PDF]

open access: yesEarth System Science Data, 2022
Accurate rainfall monitoring is critical for sustainable societies and yet challenging in many ways. Opportunistic monitoring using commercial microwave links (CMLs) in telecommunication networks is emerging as a powerful complement to conventional ...
J. C. M. Andersson   +3 more
doaj   +1 more source

Strain to ground motion conversion of distributed acoustic sensing data for earthquake magnitude and stress drop determination [PDF]

open access: yesSolid Earth, 2021
The use of distributed acoustic sensing (DAS) presents unique advantages for earthquake monitoring compared with standard seismic networks: spatially dense measurements adapted for harsh environments and designed for remote operation.
I. Lior   +6 more
doaj   +1 more source

Prototipe Sistem Pemantauan Tegangan Drop pada Sel Baterai 110 Vdc berbasis Aplikasi Telegram

open access: yesBEES: Bulletin of Electrical and Electronics Engineering, 2022
Batteries are electrochemical devices as a source of DC voltage that is quite reliable and has high stability, so that the 110 Vdc Battery has a very important role at the substation (GI) to operate the driving motors at the voltage breaker (PMT ...
A. Asrul, A. Jabbar, Ashadi Amir
semanticscholar   +1 more source

Subjective Influence of Camera-Gaze Angular Offset

open access: yesIEEE Access, 2022
The study aimed to evaluate the difficulty in maintaining eye contact during a teleconference for different camera-gaze angular offsets. Videoconferencing systems may compromise the eye contact between participants due to imperfect angular alignment ...
Jan Holub   +3 more
doaj   +1 more source

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