Results 51 to 60 of about 11,037,086 (263)

500 GHz plasmonic Mach-Zehnder modulator enabling sub-THz microwave photonics

APL Photonics, 2019
Broadband electro-optic intensity modulators are essential to convert electrical signals to the optical domain. The growing interest in terahertz wireless applications demands modulators with frequency responses to the sub-terahertz range, high power ...
Maurizio Burla, Claudia Hoessbacher, Wolfgang Heni, Christian Haffner, Yuriy Fedoryshyn, Dominik Werner, Tatsuhiko Watanabe, Hermann Massler, Delwin L. Elder, Larry R. Dalton, Juerg Leuthold   +10 more
doaj   +1 more source

Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range

Applied Sciences, 2022
The paper presents the evaluation of thin dielectric layers using a tunable split-ring resonator-based metasurface in the THz frequency range. Tunable unit cells of a metasurface allow its resonant frequency variation using some external excitation. This
Paulina Gora, Przemyslaw Lopato
doaj   +1 more source

The plasmonic BTO-on-SiN platform – beyond 200 GBd modulation for optical communications

Light: Science & Applications
An integrated photonics platform that offers high-speed modulators in addition to low-loss and versatile passive components is highly sought after for different applications ranging from AI to next-generation Tbit/s links in optical fiber communication ...
Manuel Kohli, Daniel Chelladurai, Laurenz Kulmer, Tobias Blatter, Yannik Horst, Killian Keller, Michael Doderer, Joel Winiger, David Moor, Andreas Messner, Tatiana Buriakova, Clarissa Convertino, Felix Eltes, Yuriy Fedoryshyn, Ueli Koch, Juerg Leuthold   +15 more
doaj   +1 more source

Classification of Grain-Oriented Electrical Steel Sheets by Magnetic Barkhausen Noise Using Time-Frequency Analysis and Selected Machine Learning Algorithms

Applied Sciences, 2022
In this paper, a combination of Magnetic Barkhausen Noise (MBN) and several classical machine learning (ML) methods were used to evaluate both the grade and the magnetic directions of conventional and high grain oriented electrical sheets subjected to ...
Michal Maciusowicz, Grzegorz Psuj
doaj   +1 more source

Fractional Integro-Differential Equations for Electromagnetic Waves in Dielectric Media

, 2011
We prove that the electromagnetic fields in dielectric media whose susceptibility follows a fractional power-law dependence in a wide frequency range can be described by differential equations with time derivatives of noninteger order.
A. A. Kilbas, A. A. Stanislavsky, A. Carpinteri, A. K. Jonscher, A. K. Jonscher, A. K. Jonscher, G. M. Zaslavsky, P. Debye, R. R. Nigmatullin, R. R. Nigmatullin, R. R. Nigmatullin, S. G. Samko, V. E. Tarasov, V. E. Tarasov, V. V. Novikov, Y. Yilmaz   +15 more
core   +1 more source

Controlling photothermoelectric directional photocurrents in graphene with over 400 GHz bandwidth

Nature Communications
Photodetection in the near- and mid-infrared spectrum requires a suitable absorbing material able to meet the respective targets while ideally being cost-effective.
Stefan M. Koepfli, Michael Baumann, Robin Gadola, Shadi Nashashibi, Yesim Koyaz, Daniel Rieben, Arif Can Güngör, Michael Doderer, Killian Keller, Yuriy Fedoryshyn, Juerg Leuthold   +10 more
doaj   +1 more source

Bit- and Power-Loading—A Comparative Study on Maximizing the Capacity of RSOA Based Colorless DMT Transmitters

Applied Sciences, 2017
We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters.
Simon Arega Gebrewold, Romain Bonjour, Romain Brenot, David Hillerkuss, Juerg Leuthold   +4 more
doaj   +1 more source

Electrodynamics in accelerated frames revisited

, 2010
Maxwell's equations are formulated in arbitrary moving frames by means of tetrad fields, which are interpreted as reference frames adapted to observers in space-time.
Anderson, Boulware, de Almeida, Eriksen, Kovetz, Maluf, Maluf, Mashhoon, Mashhoon, Mashhoon   +9 more
core   +1 more source

All-plasmonic sub-terahertz wireless communication link

Nature Communications
A promising approach to increase wireless capacity is the transition to sub-Terahertz carrier frequencies (0.1–0.3 THz). While traditional high-frequency approaches employ III-V semiconductor technologies, plasmonics is emerging as a potential solution ...
Tobias Blatter, Stefan M. Koepfli, Amane Zuerrer, Samuel Hess, Yannik Horst, Marcel Destraz, Daniel Rieben, Michael Baumann, Laurenz Kulmer, Jasmin Smajic, Yuriy Fedoryshyn, Juerg Leuthold   +11 more
doaj   +1 more source

Compact and ultra-efficient broadband plasmonic terahertz field detector

Nature Communications, 2019
Most efficient terahertz detection schemes rely on complex free space optics and require high-power lasers. Here, the authors report an integrated plasmonic terahertz detector on a silicon photonics platform, with 2.5 THz bandwidth and a 65 dB dynamical ...
Yannick Salamin, Ileana-Cristina Benea-Chelmus, Yuriy Fedoryshyn, Wolfgang Heni, Delwin L. Elder, Larry R. Dalton, Jérôme Faist, Juerg Leuthold   +7 more
doaj   +1 more source