11 بهمن 1401
امين قادي

امین قادی

مرتبه علمی: استادیار
نشانی: http://rms.umz.ac.ir/~aghadi/
تحصیلات: دکترای تخصصی / فیزیک
تلفن: 01135302480
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان Diffraction engineering Anderson localization of light in nonlinear aveguide array with Kerr and two photon absorption effects
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Anderson localization, nonlinear waveguide array, two-photon absorption, Kerr effect, diffraction
مجله JOURNAL OF MODERN OPTICS
شناسه DOI 10.1080/09500340.2016.1277562
پژوهشگران امین قادی (نفر اول) ، سودابه نوری جویباری (نفر دوم) ، محمدرضا پنجه پور (نفر سوم)

چکیده

Role of two-photon absorption (TPA) effect on light propagation in one-dimensional nonlinear waveguide array (NWA) is studied numerically with solving nonlinear Schrodinger equation. Our investigation includes unperturbed, diagonally and off-diagonally disordered NWA with inclusion of Kerr and TPA and the results are compared with each other. The simulations show that the increase of incident wave amplitude to NWA intensifies TPA and Kerr effects and these nonlinear optical effects, dramatically affect the output intensity profile and loss. Variations of intensity distribution in periodic NWA is about two and three times higher than in off-diagonal and diagonal disordered NWA, respectively. It means that localization of light in periodic NWA is more tunable than disordered lattices. These variations of intensity distribution under nonlinear optical effects enable us to propose and design a reconfigurable localization and diffraction-engineered discrete soliton.