Generation and stability of discrete gap solitons
نویسندگان
چکیده
منابع مشابه
Generation and stability of discrete gap solitons.
We analyze stability and generation of discrete gap solitons in weakly coupled optical waveguides. We demonstrate how both stable and unstable solitons can be observed experimentally in the engineered binary waveguide arrays and also reveal a connection between the gap-soliton instabilities and limitations on the mutual beam focusing in periodic photonic structures.
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امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
Discrete gap solitons in modulated waveguide arrays.
We suggest a novel concept of diffraction management in waveguide arrays and predict the existence of discrete gap solitons that possess the properties of both conventional discrete and Bragg grating solitons. We demonstrate that one can control both the soliton velocity and the propagation direction by varying the input light intensity.
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We obtain sharp criteria for transverse stability and instability of line solitons in the discrete nonlinear Schrödinger equations on oneand two-dimensional lattices near the anti-continuum limit. On a twodimensional lattice, the fundamental line soliton is proved to be transversely stable (unstable) when it bifurcates from the X (Γ ) point of the dispersion surface. On a one-dimensional (strip...
متن کاملBifurcations and stability of gap solitons in periodic potentials.
We analyze the existence, stability, and internal modes of gap solitons in nonlinear periodic systems described by the nonlinear Schrödinger equation with a sinusoidal potential, such as photonic crystals, waveguide arrays, optically-induced photonic lattices, and Bose-Einstein condensates loaded onto an optical lattice. We study bifurcations of gap solitons from the band edges of the Floquet-B...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2003
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.28.002345