24 papers · ranked by Valyu relevance
Hongxin Zeng, Sen Gong, Lan Wang, Tianchi Zhou + 8 more
'Feng Lan' 'Xuan Cong' 'Luyang Wang' 'Tianyang Song' 'YunCheng Zhao' 'Ziqiang Yang' 'Daniel M. Mittleman'] Title: Abstract In the past ten years, terahertz technology has developed rapidly in wireless communications, spectroscopy, and imaging. Various functional devices have been developed, such as filters, absorbers…
D. Teytelman
This paper presents a conceptual approach to phase modulation of the cavity field in storage ring RF systems. An implementation of the concept on Dimtel low-level RF controllers is also presented. The method is illustrated with the test results from a cavity simulator, as well as an electron storage ring KARA.
Zhiliang Yuan, B. Fröhlich, Marco Lucamarini, George L. Roberts + 2 more
'J. F. Dynes' 'A. J. Shields'] The art of imparting information onto a light wave by optical signal modulation is fundamental to all forms of optical communication. Among many schemes, direct modulation of laser diodes stands out as a simple, robust, and cost effective method. However, the simultaneous changes in…
Kamal Hammani, Julien Fatome, Christophe Finot
Fourier analysis plays a major role in the analysis and understanding of many phenomena in physics and contemporary engineering. However, students, who have often discovered this notion through numerical tools, do not necessarily understand all the richness that can be derived from joint analysis in the temporal and…
Victor Lazzarini, Joseph Timoney
Frequency modulation (FM) and phase modulation (PM) are well-known synthesis methods, which have been deployed widely in musical instruments. More recently, some synthesisers have implemented direct forms of FM (as opposed to PM), allowing, at least as part of their design, for higher-order modulation topologies.…
Hannah F. Y. Watson, Alfonso Ruocco, Matteo Tiberi, Jakob E. Muench + 10 more
Operating in the Transparency Regime Authors: ['Hannah\nF. Y. Watson' 'Alfonso Ruocco' 'Matteo Tiberi' 'Jakob E. Muench' 'Osman Balci' 'Sachin M. Shinde' 'Sandro Mignuzzi' 'Marianna Pantouvaki' 'Dries Van Thourhout' 'Roman Sordan' 'Andrea Tomadin' 'Vito Sorianello' 'Marco Romagnoli' 'Andrea C. Ferrari'] Next-generation…
Haoyang Sun, Qifeng Qiao, Qingze Guan, Guangya Zhou + 1 more
With the development of silicon photonics, dense photonic integrated circuits play a significant role in applications such as light detection and ranging systems, photonic computing accelerators, miniaturized spectrometers, and so on. Recently, extensive research work has been carried out on the phase shifter, which…
Longfang Ye, Kouxiang Yuan, Chunhui Zhu, Yao Zhang + 2 more
'Kunzhong Lai'] Title: Abstract The phase modulator is a key component in optical communications for its phase modulation functions. In this paper, we numerically demonstrate a variety of ultra-compact high-efficiency graphene phase modulators (GPMs) based on metal-nanoribbon integrated hybrid plasmonic waveguides in…
Rao Farhat Masood
In this paper, introduced below are the concepts of digital modulation used in many communication systems today. Techniques described include quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) and how these techniques can be used to increase the capacity and speed of a wireless network.…
Maximilian Scherer, Tianlu Wang, Robert Guggenberger, Luka Milosevic + 1 more
Neural communication across different spatial and temporal scales is a topic of great interest in clinical and basic science. Phase-amplitude coupling (PAC) has attracted particular interest due to its functional role in a wide range of cognitive and motor functions. Here, we introduce a novel measure termed the direct…
Xin Guo, Yang Liu, Tangman Yin, Blair Morrison + 6 more
'Okky Daulay' 'Wim Bogaerts' 'Benjamin J. Eggleton' 'Alvaro Casas‐Bedoya' 'David Marpaung'] Abstract: Optical modulation plays arguably the utmost important role in microwave photonic (MWP) systems. Precise synthesis of modulated optical spectra dictates virtually all aspects of MWP system quality including loss, noise…
Zihan Zhou, Meng Chao, Xinxin Su, Shuanglin Fu + 7 more
'Zhihua Li' 'Shuhui Bo' 'Zhuo Chen' 'Zhenlin Wu' 'Xiuyou Han' 'Jianping Chen'] Electro-optic modulator (EOM) is one of the key devices of high-speed optical fiber communication systems and ultra-wideband microwave photonic systems. Silicon-organic hybrid (SOH) integration platform combines the advantages of silicon…
Mareike J. Hülsemann, Dr. rer. nat, Ewald Naumann, Dr. rer. nat + 1 more
Phase-amplitude coupling is a promising construct to study cognitive processes in electroencephalography (EEG) and magnetencephalography (MEG). Due to the novelty of the concept, various measures are used in the literature to calculate phase-amplitude coupling. Here, performance of the three most widely used…
Angela Digulescu, Cornel Ioana, Alexandru Serbanescu
Monitoring highly dynamic environments is a difficult task when the changes within the systems require high speed monitoring systems. An active sensing system has to solve the problem of overlapped responses coming from different parts of the surveyed environment. Thus, the need of a new representation space which…
Nima Mirkhani, Colin G. McNamara, Gaspard Oliviers, Andrew Sharott + 2 more
Modulation of neuronal oscillations holds promise for the treatment of neurological disorders. Nonetheless, stimulating neuronal populations in a continuous open-loop manner can lead to side effects and suboptimal efficiency. Closed-loop strategies such as phase-locked stimulation aim to address these shortcomings by…
Anirudh Wodeyar, François A. Marshall, Catherine J. Chu, Uri T. Eden + 1 more
Rhythms are a common feature of brain activity. Across different types of rhythms, the phase has been proposed to have functional consequences, thus requiring its accurate specification from noisy data. Phase is conventionally specified using techniques that presume a frequency band-limited rhythm. However, in…
Ilker Duymaz, Naoki Kogo, Nihan Alp
Periodic changes in visual input can produce rhythmic patterns in EEG signals, which appear as narrowband frequency components. These components are commonly interpreted as reflecting the activity of neurons sensitive to the modulated stimulus features. Here, we present a scenario in which frequency components arise…
Anirudh Wodeyar, Mark Schatza, Alik S. Widge, Uri T. Eden + 1 more
Brain rhythms have been proposed to facilitate brain function, with an especially important role attributed to the phase of low frequency rhythms. Understanding the role of phase in neural function requires interventions that perturb neural activity at a target phase, necessitating estimation of phase in real-time.…
suraj Manikandan, Jens Andreasen
This preprint has been retracted at the authors' request because of recently discovered fundamental errors and misrepresentation in the underlying data.This communication introduces a Ka-band phase shifter that leverages a blend of the donor polymer PM6 and non-fullerene acceptor (NFA) Y7 organic materials. The design…
Ning Cao, William Bro-Jørgensen, Xiaohong Zheng, Gemma Solomon
Quantum interference effects in conjugated molecules have been well explored, with benzene frequently invoked as a pedagogical example. These interference effects have been understood through a quantum interference map in which the electronic transmission is separated into interfering and non-interfering terms, with a…
Authors not listed
This paper formally defines an operational isomorphism between spectral damping in molecular vibronic systems and neuromodulatory control in biological sensory systems. Without asserting causal continuity or physical identity across scales, we show that both domains instantiate the same class of output-selective…
Authors not listed
Despite advances in crystal engineering, predicting the packing of metal-containing molecules remains a significant challenge due to their increased structural complexity and computational cost relative to purely organic compounds. Yet, predicting solid-state structures is critical for understanding structure-property…
Xinyan Zhang, Kunpeng Zhai, Sha Zhu, Huashun Wen + 3 more
'Ninghua Zhu' 'Muhammad Ali Butt'] We propose and demonstrate a photonic-assisted approach for generating arbitrary microwave waveforms based on a dual-polarization dual-parallel Mach-Zehnder modulator, offering significant advantages in terms of tunability of repetition rates and anti-dispersion capability. In order…
Kairi Masuda
Recently, phase-field modelling has been expanded to the molecular scale. However, such atomistic phase-field simulation cannot treat diffusive motions of molecules so far. Here, we modify phase-field modelling of molecular dynamics to include rigid body motions by employing quaternions and smooth random functions.…