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

Nanophotonics
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, Li Xingfeng, Hu Pan, Wang Hongwei, Zhang Yong, Tang Guojing, He Xintao, Dong Jianwen, Su Yikai   +8 more
doaj   +2 more sources

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

Molecules
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

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

Journal 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   +1 more source

Multi-Generator Continual Learning for Robust Delay Prediction in 6G [PDF]

IEEE Transactions on Machine Learning in Communications and Networking
In future 6G networks, dependable networks will enable telecommunication services such as remote control of robots or vehicles with strict requirements on end-to-end network performance in terms of delay, delay variation, tail distributions, and ...
Xiaoyu Lan, Jalil Taghia, Hannes Larsson, Andreas Johnsson   +3 more
doaj   +2 more sources

DETERMINANTS OF CUSTOMER RETENTION IN MOBILE INDUSTRY - EVIDENCE FROM TIGO AND VODACOM CUSTOMERS IN ILALA DISTRICT, DAR ES SALAAM-TANZANIA [PDF]

ICTACT Journal on Management Studies, 2021
The study investigates the determinants of customer retention by mobile telecommunication industries in Ilala District. The study specifically examined the influence of convenience of service, pricing/tariff, network coverage, and service quality on ...
David Mosoma, Damas Mfundiri
doaj   +1 more source

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

Earth 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, V. Bareš, M. Fencl, M. Schleiss, J. Jaffrain, A. Berne, J. Rieckermann   +6 more
doaj   +1 more source

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

Electronics, 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, Jongho Kim, Jinhyung Oh, Youngkeun Yoon, Sangwook Park, Jaegon Lee   +5 more
semanticscholar   +1 more source

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

Earth 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, J. Olsson, R. (C. Z. ). van de Beek, J. Hansryd   +3 more
doaj   +1 more source

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

Solid 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, I. Lior, A. Sladen, D. Mercerat, J.-P. Ampuero, D. Rivet, S. Sambolian   +6 more
doaj   +1 more source

Analog Wavelength Locking in an Optical Single-Sideband Transmitter of a Millimeter-Wave Radio-Over-Fiber Link Featuring a Micro-Ring Resonator and a Heat-Pump-Controlled Laser

Photonics, 2023
This paper presents a novel approach to addressing the issue of temperature-induced instability in an optical, single-sideband transmitter based on a micro-ring resonator (MRR) suitable for millimeter-wave (mmW) radio-over-fiber (RoF) communications.
Kristjan Vuk Baliž, Andraž Debevc, Matjaž Vidmar, Boštjan Batagelj   +3 more
doaj   +1 more source