Manakov system

Article summary

Maxwell's Equations, when converted to cylindrical coordinates, and with the boundary conditions for an optical fiber while including birefringence as an effect taken into account, will yield the coupled nonlinear Schrödinger equations. After employing the Inverse scattering transform (a procedure analogous to the Fourier Transform and Laplace Transform) on the resulting equations, the Manakov system is then obtained. The most general form of the Manakov system is as follows: : v_{1}'=-i\,\xi\,v_{1}+q_{1}\,v_{2}+q_{2}\,v_{3} : v_{2}'=-q_{1}^{*}\,v_{1}+i\,\xi\,v_{2} : v_{3}'=-q_{2}^{*}\,v_{1}+i\,\xi\,v_{3}. It is a coupled system of linear ordinary differential equations. The functions q_{1}, q_{2} represent the envelope of the electromagnetic field as an initial condition. For theoretical purposes, the integral equation version is often very useful. It is as follows: : \lim_{x\to a}e^{i\xi x}v_{1}-\lim_{x\to b}e^{i\xi x}v_{1}=\int_{a}^{b}[e^{i\xi x}\,q_{1}\,v_{2}+e^{i\xi x}\,q_{2}\,v_{3}]\,dx : \lim_{x\to a}e^{-i\xi x}v_{2}-\lim_{x\to b}e^{-i\xi x}v_{2}=-\int_{a}^{b}e^{-i\xi x}\,q_{1}^{*}\,v_{1}\,dx : \lim_{x\to a}e^{-i\xi x}v_{3}-\lim_{x\to b}e^{-i\xi x}v_{3}=-\int_{a}^{b}e^{-i\xi x}\,q_{2}^{*}\,v_{1}\,dx One may make further substitutions and simplifications, depending on the limits used and the assumptions about boundary or initial conditions.…

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