Pt-Symmetric Nonlinear Directional Fiber Couplers with Gain and Loss for Ultrashort Optical Pulses
نویسندگان
چکیده
منابع مشابه
Optical solitons in PT -symmetric nonlinear couplers with gain and loss
We study spatial and temporal solitons in the PT symmetric coupler with gain in one waveguide and loss in the other. Stability properties of the highand low-frequency solitons are found to be completely determined by a single combination of the soliton’s amplitude and the gain-loss coefficient of the waveguides. The unstable perturbations of the high-frequency soliton break the symmetry between...
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The nonlinear fiber coupler is considered as a Hamiltonian dynamical system with an infinite number of degrees of freedom, with the soliton states of the coupler being the singular points of this dynamical system. Numerical simulations show that arbitrary initial conditions give rise, asymptotically, to oscillations around some of the stable singular points and some amount of radiation. Example...
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I. V. Barashenkov,1,2,3 Sergey V. Suchkov,1,4 Andrey A. Sukhorukov,1 Sergey V. Dmitriev,4 and Yuri S. Kivshar1 1Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia 2Department of Mathematics, University of Cape Town, Rondebosch 7701, South Africa 3Joint Institute for Nuclear Research, Dubna,...
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We demonstrate that light propagation in waveguide arrays that include PT-symmetric structures can exhibit strongly nonlocal sensitivity to topology of the array at fixed other parameters. We consider an array composed of lossless waveguides, that includes a pair of PT-symmetric waveguides with balanced gain and loss, and reveal that PT-symmetry breaking thresholds are different for planar and ...
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ژورنال
عنوان ژورنال: Journal of Lasers, Optics & Photonics
سال: 2017
ISSN: 2469-410X
DOI: 10.4172/2469-410x.1000155