Optical <Emphasis Type="Italic">Gaussons</Emphasis> and dark solitons in directional couplers with spatiotemporal dispersion |
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Authors: | Farida Tahir Muhammad Younis Hamood Ur Rehman |
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Institution: | 1.Department of Mathematics,National College of Business Administration and Economics,Lahore,Pakistan;2.Centre of Undergraduate Studies,University of the Punjab,Lahore,Pakistan;3.Department of Mathematics,University of the Okara,Okara,Pakistan |
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Abstract: | This paper study the dynamics of optical solitons for nonlinear directional couplers. This coupler system is considered with the group velocity dispersion and the cross-phase modulation of two components along with the spatiotemporal dispersion coefficients. The constraint conditions for the existence of optical Gaussons and dark solitons are listed under the log law and Kerr law nonlinearities, repectively. Additionally, a couple of other solutions known as singular periodic and combined dark-singular solitons, fall out as a by-product of this scheme. This scheme however fails to retrieve bright soliton solution. |
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