Optical solitons: mathematical model and simulations by Loi, W. S., Ong, Chee Tiong

“…The outcomes from simulations further clarify the effects of fiber loss during transmission of signal which distorted the balanced effects between self-phase modulation (SPM) and group velocity dispersion (GVD) in nonlinear optical fiber with fiber. …”

التأثيرات الطورية على النبضة المتناهية القصر وطرق تعويضها by إبراهيم بلال, عاطف الجندي, علي الشندي

“…Pulses suffer from changes in time and space when it propagates through matter, like the positive Group Velocity Dispersion (GVD) which increases the pulse duration and disperses its components ,this appears a s a result of the second derivative of phase with respect to frequency. …”
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Slow light in a 2D semiconductor plasmonic structure by Matthew Klein, Rolf Binder, Michael R. Koehler, David G. Mandrus, Takashi Taniguchi, Kenji Watanabe, John R. Schaibley

“…Here, the authors use coupled exciton-surface plasmon polaritons (SPPs) in a hybrid monolayer WSe2-metallic waveguide structure to demonstrate a 1300-fold reduction of the SPP group velocity.…”
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التأثيرات الطورية على النبضة المتناهية القصر وطرق تعويضها by إبراهيم بلال, عاطف الجندي, علي الشندي

“…Pulses suffer from changes in time and space when it propagates through matter, like the positive Group Velocity Dispersion (GVD) which increases the pulse duration and disperses its components ,this appears a s a result of the second derivative of phase with respect to frequency. …”
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Dispersion Properties of Surface Waves Decaying in Red-Shifted and Blue-Shifted Gaps in Photonic Hypercrystals by Hasnain Haider, Munazza Zulfiqar Ali

“…PHC are composed of a dielectric and hyperbolic metamaterial (HMM) with thin layers of both metal and dielectric surface waves that decay inside red-shifted gaps have a negative group velocity, whereas surface waves that decay inside traditional blue-shifted gaps have more typical characteristics. …”
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Heralded generation of single photons in pure quantum states by Zhang, L, Soeller, C, Cohen, O, Smith, B, Walmsley, I

“…We explore a technique, known as group-velocity matching, that enables the heralded generation of pure single photons through nonlinear optical processes. …”

Hybrid squeezing of solitonic resonant radiation in photonic crystal fibers by Tran, T, Cassemiro, K, Soeller, C, Blow, K, Biancalana, F

“…This hybrid squeezing occurs when an arbitrary short soliton emits quasimonochromatic resonant radiation near a zero-group-velocity-dispersion point of the fiber. Photons around the resonant frequency become strongly correlated due to the presence of the classical soliton, and a reduction of the quantum noise below the shot-noise level is predicted. © 2011 American Physical Society.…”

A survey of the new proposal about the photon momentum by Bahadoran, M., Moradpour, H., Ali, J., Poznanski, R. R.

“…In addition, the group velocity of massive particles exceeds the light velocity which violates the causality principle. …”

Selection of Higher Order Lamb Wave Mode for Assessment of Pipeline Corrosion by Donatas Cirtautas, Vykintas Samaitis, Liudas Mažeika, Renaldas Raišutis, Egidijus Žukauskas

“…The selection of the proper mode is discussed with the support of phase and group velocity dispersion curves, out of plane and in plane distributions over the thickness and on surface of the sample, and leakage losses due to water load. …”
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Yb:CALYO-based femtosecond chirped pulse regenerative amplifier for temporally resolved pump-probe spectroscopy by A. S. Rudenkov, V. E. Kisel, A. S. Yasukevich, K. L. Hovhannesyan, A. G. Petrosyan, N. V. Kuleshov

“…Despite the significant reduction of amplified pulse duration the task of improvement group velocity dispersion balance (including high orders of group velocity dispersion) remains relevant.…”
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High thermoelectric performance of TlInSe3 with ultra-low lattice thermal conductivity by Xixi Yin, Xixi Yin, Lang Zhou, Lang Zhou, Qi Wang, Qi Wang, Yangfang Liao, Yangfang Liao, Bing Lv, Bing Lv

“…We find that the low phonon group velocity and strong anharmonicity are the main factors leading to the ultra-low lattice thermal conductivity of TlInSe3. …”
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All-angle negative refraction of highly squeezed plasmon and phonon polaritons in graphene–boron nitride heterostructures by Chen, Hongsheng, Zhang, Baile, Lin, Xiao, Yang, Yi, Rivera, Nicholas H., Lopez, Josue Jacob, Shen, Yichen, Kaminer, Ido Efraim, Joannopoulos, John, Soljacic, Marin

“…However, to achieve negative refraction of highly squeezed polaritons, such as plasmon polaritons in graphene and phonon polaritons in boron nitride (BN) with their wavelengths squeezed by a factor over 100, requires the ability to flip the sign of their group velocity at will, which is challenging. Here we reveal that the strong coupling between plasmon and phonon polaritons in graphene-BN heterostructures can be used to flip the sign of the group velocity of the resulting hybrid (plasmon-phonon-polariton) modes. …”
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Semi-Analytical Finite Element (SAFE) method for plotting Lamb waves dispersion curves of an aluminum plate and comparison with Disperse software by Yacoubi Abdelali, Jabiri Ayoub, El Allami Mhammed

“…This study, the main purpose of this work is to do a quantitative evaluation of the SAFE technique by calculating dispersion curves (wavenumber, phase velocity, and group velocity) and comparing them to those generated by Disperse Software.…”
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Dispersion of surface waves along various paths to Uppsala, Sweden by A. S. TETSUO

“…In continuation of Part I (Santo 1902), group velocity dispersionof surface waves along various oceanic patlis to Uppsala, Sweden, willbe reported in this paper. …”
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Dispersion relation of spoof surface plasmon resonant mode on concentric annular metal corrugation by Yuta Annaka, Kazuo Ogura, Masaya Ito

“…The dispersion relation and group velocity are extracted from the measured parameters and correspond well to the calculated dispersion relation. …”
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Unveiling the dynamics of optical frequency combs from phase-amplitude correlations by M. Ansquer, V. Thiel, S. De, B. Argence, G. Gredat, F. Bretenaker, N. Treps

“…These measurements are well reproduced by a model taking into account the correlations between the carrier envelope offset phase noise and the amplitude noise induced by the group velocity dispersion of the laser cavity.…”
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Magnetostatic modes in tangentially magnetized ferrospinels films by Ludmila N Mitlina, Gregori S Badrtdinov, Yulia V Velikanova

“…Interpreting these peaks as magnetostatic modes, the wave number, group velocity, and extinction coefficient are retrieved from experimental values of the saturation magnetization, crystallographic anisotropy constant, and magnetic field of the observed modes. …”
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Coherent control in atomic chains: To trap and release a traveling excitation by R. Gutiérrez-Jáuregui, A. Asenjo-Garcia

“…The coherent control over atomic states translates into control over the group velocity of the spin waves. A traveling excitation can be stored and released without dissipation by adiabatically changing the control field amplitude. …”
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Spatiotemporal control of high-intensity laser pulses with a plasma lens by D. Li, K. G. Miller, J. R. Pierce, W. B. Mori, A. G. R. Thomas, J. P. Palastro

“…Spatiotemporal control encompasses a variety of techniques for producing laser pulses with dynamic intensity peaks that move independently of the group velocity. This controlled motion of the intensity peak offers a new approach to optimizing laser-based applications and enhancing signatures of fundamental phenomena. …”
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Zero dispersion Kerr solitons in optical microresonators by Miles H. Anderson, Wenle Weng, Grigory Lihachev, Alexey Tikan, Junqiu Liu, Tobias J. Kippenberg

“…Here, the authors find the missing link for soliton microcombs that exist at the boundary where the group velocity dispersion of light changes sign: zero-dispersion solitons. …”
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