Results 31 to 40 of about 11,200,042 (298)
Meikuang Anquan, 2020 Dispersion curves of Rayleigh channel waves may have “cross” between the fundamental and first higher order modes either in the phase velocities or in group velocities in the low frequency band.
HE Daxi, ZHU Peimin, SHEN Suishui, CAI Wei, WANG Wengang
doaj +1 more source
Modulational instability of discrete solitons in coupled waveguides with group velocity dispersion [PDF]
, 2006 We study temporal modulational instability of spatial discrete solitons in waveguide arrays with group velocity dispersion (GVD). For normal GVD we report existence of the strong 'neck'-type instability specific for the discrete solitons.
Vladimirov, Andrei G. +4 more
core +1 more source
High coupling efficiency to a low dispersion slow light-supporting photonic crystal waveguide [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 In this paper, we design a waveguide on photonic crystal slab for propagation of low-dispersion slow light. By shifting the air holes adjacent to the waveguide, we obtain a photonic crystal waveguide with a group index of 25 in 25 nm bandwidth which ...
Moghaddam M. Khatibi +2 more
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Period-Timing Bifurcations in a Dispersion-Managed Fiber Laser With Zero Group Velocity Dispersion
IEEE Photonics Journal, 2016 We report on the numerical results of period timing bifurcations in a dispersion-managed (DM) fiber laser with zero group velocity dispersion (GVD).The fiber laser is passively mode-locked by using the nonlinear polarization rotation technique.
Qian Zhang +3 more
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Group velocity dispersion curves estimation based on joint processing of sound pressure and vertical particle velocity [PDF]
JASA Express LettersIt is difficult to separate and estimate the intersected group velocity dispersion curves for different normal modes when the frequency is lower than the cutoff frequency of water column.
Guangxue Zheng +3 more
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New Journal of Physics, 2022 The group velocity of an optical beam in free space is usually considered to be equal to the speed of light in vacuum. However, it has been recently realized that, by structuring the beam’s angular and temporal spectra, one can achieve well pronounced ...
P Hildén +3 more
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Alumina coating for dispersion management in ultra-high Q microresonators
APL Photonics, 2020 Silica optical microspheres often exhibit ultra-high quality factors, yet their group velocity dispersion, which is crucial for nonlinear optics applications, can only be coarsely tuned.
Marvyn Inga +7 more
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Which group velocity in a dispersive medium ? [PDF]
The European Physical Journal Plus, 2011 To be submitted on ...
El Gawary O +2 more
openaire +3 more sources
ChandraObservations of Low Velocity Dispersion Groups [PDF]
The Astrophysical Journal, 2005 Deviations of galaxy groups from cluster scaling relations can be understood in terms of an excess of entropy in groups. The main effect of this excess is to reduce the density and thus luminosity of the intragroup gas. Given this, groups should also should show a steep relationship between X-ray luminosity and velocity dispersion.
Helsdon, Stephen F. +2 more
openaire +2 more sources
Measuring the group velocity dispersion of higher order modes in hollow core photonic bandgap fibre [PDF]
, 2015 We present for the first time the group velocity dispersion of multiple distinguishable modes propagating in 3, 7 and 19 cell hollow core photonic bandgap fibres.
Bradley, T.D. +13 more
core +2 more sources