Results 221 to 230 of about 35,388 (266)
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Group-velocity dispersion in a Bragg fiber
Journal of the Optical Society of America B, 2008A comprehensive study of the group-velocity dispersion of the TE, TM, and hybrid modes in a Bragg fiber is presented by showing many numerical examples. The dispersion can be represented in a simple form as the sum of the material and the waveguide dispersions under the quarter-wave stack condition.
Jun-Ichi Sakai, Kazuki Kuramitsu
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Group-velocity-dispersion-compensated propagation of short pulses in dispersive media
Optics Letters, 1996An optical scheme based on a single angularly dispersive element is proposed for canceling group-velocity dispersion for pulse propagation in dispersive media. It is demonstrated experimentally that a pulse duration of 100 fs is preserved throughout the travel of a 248-nm-pulse through a 75-mm-long fused-silica slab.
S, Szatmári, P, Simon, M, Feuerhake
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Normal group-velocity dispersion Kerr frequency comb
Optics Letters, 2011We show via numerical simulation that Kerr frequency combs can be generated in a nonlinear resonator characterized with normal group-velocity dispersion. We find the spectral shape of the comb and temporal envelope of the corresponding optical pulses formed in the resonator.
A B, Matsko, A A, Savchenkov, L, Maleki
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Dispersive pulse propagation and group velocity
The Journal of the Acoustical Society of America, 1993The propagation of pulses in a dissipative medium is investigated both theoretically and experimentally. The theoretical work is based on the dissipative dispersion integral, and the measurements are made in an air-filled periodic waveguide (i.e., the dispersion is Bloch wave dispersion).
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Dispersion analysis of a planar negative group velocity-transmission line
2007 European Radar Conference, 2007The existence of a negative group velocity region in a stub-loaded transmission line is investigated, focusing on the reshaping experienced by amplitude modulated signals propagating in it.
Monti, Giuseppina, Tarricone, Luciano
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Phonon dispersion sheets and group velocities in GaAs
Journal of Physics: Condensed Matter, 1990Phonon frequencies on two dispersion sheets for TA modes have been determined by inelastic neutron scattering on the (001) and the (011) planes at 12 K. Phonon group velocities for these phonons have been derived. The results are used to calculate heat transport properties.
B Dorner, D Strauch
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Group-velocity dispersion in chirped-pulse amplifier
Acta Physica Sinica (Overseas Edition), 1996By using the pulse propagation equation in the nonlinear dispersive medium, the effects of second- and third-order group-velocity dispersion on pulse evolution in the stretching, amplification and compressing are studied when chirped pulse amplification is applied to the pulses of a width
Shen Yu-zhen +3 more
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Group velocity dispersion measurements of microstructured fibers
Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest (IEEE Cat. No.01CH37170), 2001Summary form only given. There has been great recent interest in microstructured fibers that consist of a regular arrangement of holes stretched along silica or air core. These fibers can guide light either by opening a photonic bandgap or, in the case of silica core, by total internal reflection. Microstructure fibers have unique dispersion properties
D. Ouzounov +7 more
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Group velocity, phase velocity, and dispersion in human calcaneusin vivo
The Journal of the Acoustical Society of America, 2007Commercial bone sonometers measure broadband ultrasonic attenuation and/or speed of sound (SOS) in order to assess bone status. Phase velocity, which is usually measured in frequency domain, is a fundamental material property of bone that is related to SOS, which is usually measured in time domain.
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Group-velocity dispersion in an all-pass Bragg filter
Optics Letters, 1994On the basis of previously performed theoretical analysis it is shown that a slanted volume grating acts as an all-pass filter with nonlinear dispersion when the diffracted wave is evanescent. An analytical expression for the grating transfer function applicable over a wide angular range of mutual orientation of the initial wave and grating vectors is ...
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