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1.
Propagation of a light pulse through a weakly inhomogeneous optical fiber is analyzed. The non-linear envelope equation describing the evolution of polarized pulses is determined by statistical properties of inhomogeneities in the optical fiber. The isotropic Manakov system of equations is shown to be applicable in the presence of high-frequency small-scale defects in the fiber. In the presence of only large-scale inhomogeneities, the signal dynamics are described by an anisotropic system of equations. 相似文献
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A. E. Bednyakova M. P. Fedoruk A. S. Kurkov E. M. Sholokhov S. K. Turitsyn 《Laser Physics》2011,21(2):290-293
A Raman converter based on an active fiber with variable mode structure is experimentally and theoretically studied. It is
demonstrated that a conventional telecommunication fiber with variable mode structure can be used to construct Raman converters 相似文献
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We apply an approach based on the Fokker-Planck equation to study the statistics of optical soliton parameters in the presence of additive noise. This rigorous method not only allows us to reproduce and justify the classical Gordon-Haus formula but also leads to new exact results. 相似文献
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We study the statistics of optical data transmission in a noisy nonlinear fiber channel with a weak dispersion management and zero average dispersion. Applying analytical expressions for the output probability density functions both for a nonlinear channel and for a linear channel with additive and multiplicative noise we calculate in a closed form a lower bound estimate on the Shannon capacity for an arbitrary signal-to-noise ratio. 相似文献
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Autosoliton transmission in dispersion-managed systems guided by in-line nonlinear optical loop mirrors 总被引:1,自引:0,他引:1
We examine the feasibility of optical pulse transmission in dispersion-managed fiber systems with in-line nonlinear optical loop mirrors. Applying numerical analysis, we find regimes of stable propagation over long distances in such lines, with a significant increase in the signal-to-noise ratio. 相似文献
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We study a soliton solution of a path-averaged (in the spectral domain) propagation equation governing the transmission of
a chirped breather pulse in the fiber lines with dispersion compensation. We demonstrate that the averaged Hamiltonian model
correctly describes features of the chirped soliton observed in numerical simulations and experiments. We show that the Hamiltonian
is bounded from below if the average dispersion is anomalous 〈 d〉>0); that, together with the condition H
sol<0, indicates stability of dispersion-managed solitons in this region.
Pis’ma Zh. éksp. Teor. Fiz. 68, No. 11, 791–795 (10 December 1998)
Published in English in the original Russian journal. Edited by Steve Torstveit. 相似文献
8.
We examine similarities and differences between high-power parabolic pulse generation in an active medium and in tapered fiber with decreasing normal dispersion. Using a realistic tapered fiber design, we demonstrate the possibility of parabolic pulse generation without an external pump and determine the limitations of this approach. 相似文献
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A quantitative analysis of the BER penalty due to deviations from the optimal decision level in systems employing optical regeneration is presented. Applying extensive Multicanonical Monte Carlo modelling we study the accumulation of BER with propagation and compare different analytical approximations of the regenerator nonlinear transfer function. 相似文献
10.
We discuss the notion of spin squeezing considering two mutually exclusive classes of spin-s states, namely, oriented and non-oriented states. Our analysis shows that the oriented states are not squeezed while non-oriented
states exhibit squeezing. We also present a new scheme for construction of spin-s states using 2s spinors oriented along different axes. Taking the case of s=1, we show that the ‘non-oriented’ nature and hence squeezing arise from the intrinsic quantum correlations that exist among
the spinors in the coupled state. 相似文献