Results 31 to 40 of about 1,782,899 (173)

Free Space Ground to Satellite Optical Communications Using Kramers–Kronig Transceiver in the Presence of Atmospheric Turbulence

Sensors, 2022
Coherent detection provides the optimum performance for free space optical (FSO) communication systems. However, such detection systems are expensive and require digital phase noise compensation.
Mahdi Naghshvarianjahromi, Shiva Kumar, M. Jamal Deen   +2 more
doaj   +1 more source

ON KRAMERS-KRONIG RELATIONS FOR GUIDED AND SURFACE WAVES

IOA 40th Anniversary Conference 2014, 2023
It is well known that in unbounded media the acoustic attenuation as function of frequency is linked to the frequency-dependent sound velocity (dispersion) via Kramers-Kronig dispersion relations.
V. Krylov
semanticscholar   +1 more source

The Use of Kramers-Kronig Relations for Verification of Quality of Ferrite Magnetic Spectra

Electrical, Control and Communication Engineering, 2015
The complex initial permeability (CIP) as a function of frequency is one of the main properties of ferrites. This characteristic (CIP) is measured experimentally, therefore there can be found noisy, doubtful or incomplete parts of the spectrum.
Ponomarenko Nikolajs, Solovjova Tatjana, Grizans Juris   +2 more
doaj   +1 more source

A Novel Modulation Scheme Based on the Kramers–Kronig Relations for Optical IM-DD Systems

Photonics
The increasing demand for higher data rates in optical communication systems, especially within data centers and backbone networks, calls for the development of advanced modulation formats that can significantly enhance system performance.
Xiaohe Dong, Kuokuo Zhang, Caiming Sun
doaj   +1 more source

First-Principles Calculation of Structural, Electronic, and Optical Properties of Cubic Perovskite CsPbF3

East European Journal of Physics, 2023
Lead halide perovskites have attracted considerable attention as one of the most promising materials for optoelectronic applications. The structural, electronic, and optical properties of the cubic perovskite CsPbF3 were studied using density functional ...
Zozan Y. Mohammed, Sarkawt A. Sami, Jalal M. Salih   +2 more
doaj   +1 more source

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

Advanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan, Maksim L. Sargsyan, Davit A. Karakhanyan, Ani P. Khachatryan, Maria A. Levonyan, Dmitrii Litvinov, Maciej Koperski, Artsruni V. Margaryan, Makars Šiškins, Konstantin S. Novoselov, Davit A. Ghazaryan   +10 more
wiley   +1 more source

Measurements of complex refractive index change of photoactive yellow protein over a wide wavelength range using hyperspectral quantitative phase imaging

Scientific Reports, 2018
A novel optical holographic technique is presented to simultaneously measure both the real and imaginary components of the complex refractive index (CRI) of a protein solution over a wide visible wavelength range.
KyeoReh Lee, Youngmin Kim, JaeHwang Jung, Hyotcherl Ihee, YongKeun Park   +4 more
doaj   +1 more source

Synergistic Spin‐Polarization and Single‐Atom Engineering in Magnetic Heterojunctions for Efficient Solar Water Splitting

Advanced Science, EarlyView.
High‐throughput screening led to the identification of 67 Z‐scheme heterojunctions (comprising 2D magnetic transition metal halides and non‐magnetic transition metal chalcogenides). For CrI3/MoTe2 and CrI3/WTe2, electronic structure analysis demonstrated that synergistic crystallographic point group and built‐in electric field effects generate a ...
Hongyang Ren, Zhenzhou Guo, Huirong Wu, Peilin Huang, Jie Yang, Jie Zhang, Guangqian Ding, Hongkuan Yuan, Biao Wang   +8 more
wiley   +1 more source

Generalized Kramers–Kronig relations and sum rules for moments and powers of degenerate four wave mixing susceptibility

Optical Review, 2021
Generalized Kramers–Kronig (K–K) type dispersion relations and sum rules are derived in the static limit for the moments of the degenerate four wave mixing susceptibility.
J. Saarinen
semanticscholar   +1 more source