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
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Thermally tunable add-drop filter based on valley photonic crystals for optical communications [PDF]
NanophotonicsValley 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
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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 +6 more
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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 +3 more
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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 +6 more
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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 +3 more
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Subjective Influence of Camera-Gaze Angular Offset
IEEE 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
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International Journal of Optics, 2022 We propose and simulate a third-order 3D electro-optically highly tunable compact add-drop filter based on nonlinear microring resonators. The used tuning mechanism relies on enhanced Kerr nonlinearity in a graphene layer integrated on top of a two ...
Filston Rukerandanga +2 more
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Extracting Customer Behavior Pattern in a Telecom Company Using Temporal Fuzzy Clustering and Data Mining [PDF]
Journal of Information Technology Management, 2017 One of the most important issues in Customer Relationship Management is customer segmentation and product offer based on their needs. In practice, Customer’s behavior will change over the time by changes in technology, increase in the number of new ...
Mohammad Fathian, Ehsan Azhdari
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Monitoring the COVID-19 epidemic with nationwide telecommunication data [PDF]
, 2021 In response to the novel coronavirus disease (COVID-19), governments have introduced severe policy measures with substantial effects on human behavior. Here, we perform a large-scale, spatio-temporal analysis of human mobility during the COVID-19 epidemic.
arxiv +1 more source