Results 1 to 10 of about 775,489 (154)

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

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   +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]

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   +2 more sources

Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

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, Stephen Musyoki, Edwin O. Ataro   +2 more
doaj   +2 more sources

Integrated magneto-photonic non-volatile multi-bit memory [PDF]

J. Appl. Phys. 136, 083908 (2024)
We present an integrated magneto-photonic device for all-optical switching of non-volatile multi-bit spintronic memory. The bits are based on stand-alone magneto-tunnel junctions which are perpendicularly magnetized with all-optically switchable free layers, coupled onto photonic crystal nanobeam cavities on an indium phosphide based platform.
Hamed Pezeshki, Pingzhi Li, R. Lavrijsen, Martijn Heck, Bert Koopmans   +4 more
arxiv   +3 more sources

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

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

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

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

BEES: 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

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