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Description
Equations of Stokes vector formalism or the technique of angular variables are usually used to analyze the evolution of the electromagnetic wave polarization state in a tokamak plasma. Both approaches assume that plasma is a weakly anisotropic and smoothly inhomogeneous media. The description of polarization changes for the plasma that does not meet these assumptions (e.g. in the region of turbulent plasma) requires a numerical solution of Maxwell's equations. In such a case the finite-difference time-domain (FDTD) method can be used. This paper presents a computational algorithm based on the FDTD method. To test the software, a linear polarized wave propagation through the magnetized tokamak plasma has been simulated and compared to the solution based on the angular variables technique in selected plasma conditions.
