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Coupled Ring Resonators at Fibonacci Frequencies
2020 22nd International Conference on Transparent Optical Networks (ICTON), 2020Since the Middle Ages, Fibonacci (FB) numbers have attracted the interest of many scientists. In the recent years, a great research effort has been spent on the applications of FB numbers and sequences. It has been demonstrated that also some properties of resonant electronic systems are related to FB numbers. In this paper, an optical resonant device,
Ciminelli C. +3 more
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Cross-frequency coupling between neuronal oscillations
Trends in Cognitive Sciences, 2007Electrophysiological recordings in animals, including humans, are modulated by oscillatory activities in several frequency bands. Little is known about how oscillations in various frequency bands interact. Recent findings from the human neocortex show that the power of fast gamma oscillations (30-150Hz) is modulated by the phase of slower theta ...
Ole, Jensen, Laura L, Colgin
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Ultrastrong coupling between light and matter
Nature Reviews Physics, 2018Light–matter coupling with strength comparable to the bare transition frequencies of the system is called ultrastrong. This Review surveys how experiments have realized ultrastrong coupling in the past decade, the new phenomena predicted in this regime ...
Anton Frisk Kockum +4 more
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Single-frequency coupled asymmetric microcavity laser
Optics Letters, 2008Single-mode lasing from a coupled asymmetric microcavity is achieved. By coupling two size mismatched circular microrings to form a coupled asymmetric microcavity, multi-whispering-gallery modes are successfully suppressed and single-frequency laser emission is robustly obtained.
Lei, Shang, Liying, Liu, Lei, Xu
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Coupled-Resonator Filters With Frequency-Dependent Couplings: Coupling Matrix Synthesis
IEEE Microwave and Wireless Components Letters, 2012This letter presents a novel technique for synthesis of coupled-resonator filters with inter-resonator couplings varying linearly with frequency. The values of non-zero elements of the coupling matrix are found by solving a nonlinear least squares problem involving eigenvalues of matrix pencils derived from the coupling matrix and reference zeros and ...
Lukasz Szydlowski +2 more
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Cross-Frequency Coupling in Childhood Absence Epilepsy
Brain Connectivity, 2022Objective: Absence seizures are the prototypic primarily generalized seizures, but there is incomplete understanding regarding their generation and maintenance. A core network for absence seizures has been defined, including focal cortical and thalamic regions that have frequency-dependent interactions.
Jeffrey R. Tenney +2 more
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Effects of reactor geometry and frequency coupling on dual-frequency capacitively coupled plasmas
Plasma Sources Science and Technology, 2013In dual-frequency (DF) capacitively coupled plasma discharges, the effect of reactor geometry on the plasma density is investigated by means of a two-dimensional self-consistent fluid model combined with a power supply computation module. The results indicate that by enlarging the inter-electrode gap or by blocking the electrode with dielectric ...
Zhen-Hua Bi +4 more
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Frequency Modulated Coupled Oscillator Arrays
31st European Microwave Conference, 2001, 2001A linear array of oscillators each connected to a radiator to combine output power of the oscillators in free-space can be used in order to scan the radiated beam electronically by controlling free-running frequencies of both end oscillators. We applied this technique to Frequency Modulated Continuous Wave (FMCW) radar to perform electronically beam ...
Ragip Ispir +4 more
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Frequency reconfigurable aperture coupled antenna
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012The design of wideband log-periodic aperture coupled with frequency agility is studied for modern-day wireless communication application. The antenna is constructed on FR-4 substrate. Seven square patches are used in a log-periodic formation to achieved wide bandwidth of 37% or from 3.8 GHz to 5.5 GHz.
M. F. Ismail +5 more
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Frequency locking in weakly coupled lasers
Optics Letters, 1985An important question concerning coupled lasers is the range of optical-resonator length fluctuations over which frequency locking occurs. In this Letter, an analytical expression for the lock band is derived.
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