17 research outputs found
Generation of slow intense optical solitons in a resonance photonic crystal
Full text linkWe demonstrate interesting and previously unforeseen properties of a pair of
gap solitons in a resonant photonic crystal which are predicted and explained
in a physically transparent form using both analytical and numerical methods.
The most important result is the fact that an oscillating gap soliton created
by the presence of a localized population inversion inside the crystal can be
manipulated by means of a proper choice of bit rate, phase and amplitude
modulation. Developing this idea, we are able to obtain qualitatively different
regimes of a resonant photonic crystal operation. In particular, a noteworthy
observation is that both the delay time and amplitude difference must exceed a
certain level to ensure effective control over the soliton dynamics
Statistics of the One-Electron Current in a One-Dimensional Mesoscopic Ring at Arbitrary Magnetic Fields
Full text linkThe set of moments and the distribution function of the one-electron current
in a one-dimensional disordered ring with arbitrary magnetic flux are
calculated.Comment: 10 pages; Plain TeX; IFUM 448/FT; to appear in J. Stat. Phy
Delocalization in an open one-dimensional chain in an imaginary vector potential
Full text linkWe present first results for the transmittance, T, through a 1D disordered
system with an imaginary vector potential, ih, which provide a new analytical
criterion for a delocalization transition in the model. It turns out that the
position of the critical curve on the complex energy plane (i.e. the curve
where an exponential decay of is changed by a power-law one) is different
from that obtained previously from the complex energy spectra. Corresponding
curves for or are also different. This happens because of
different scales of the exponential decay of one-particle Green's functions
(GF) defining the spectra and many-particle GF governing transport
characteristics, and reflects higher-order correlations in localized
eigenstates of the non-Hermitian model.Comment: 4 pages in RevTex, 1 eps figure include
Deviations from the Gaussian distribution of mesoscopic conductance fluctuations
Get PDFThe conductance distribution of metallic mesoscopic systems is considered.
The variance of this distribution describes the universal conductance
fluctuations, yielding a Gaussian distribution of the conductance. We calculate
diagrammatically the third cumulant of this distribution, the leading deviation
from the Gaussian. We confirm random matrix theory calculations that the
leading contribution in quasi-one dimension vanishes. However, in quasi two
dimensions the third cumulant is negative, whereas in three dimensions it is
positive.Comment: 9 pages, Revtex, with eps figures,to appear in Phys Rev
Slow-light generation in an Er-doped glass via electromagnetically induced transparency
Full text linkThe timing jitter suppression of subpicosecond optical solitons during their transmission over long distant fibre
Full text linkLimitation of the transmission rate in optical soliton high bit rate (5 Gbits/s and higher) and ultralong (up to 10,000 km) information transmission systems is mainly due to soliton timing jitter, which is concerned with interaction of solitons with the spontaneous noise of optical amplifiers (Gordon-Haus effect)1 and electrostrictional soliton long-range interaction.2 The methods of the soliton timing jitter suppression were proposed.3,4 Similar problems arise when teraherz sequence of subpicosecond solitons have to be transmitted through long fibre of up to 100 km length. In this paper we propose the original method of the timing jitter suppression of subpicosecond solitons. The method is based on the soliton frequency stabilization due to the joint action of differential spectral amplification of soliton and Raman self-frequency shift.</jats:p
Notice of Violation of IEEE Publication Principles - Specialty-fiber amplifier for a mode-locked Tm-laser with intracavity dispersion compensation
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