  The time-dependent Maxwell system describing electromagnetic wave propagation
in inhomogeneous isotropic media in the one-dimensional case reduces to a
Vekua-type equation for bicomplex-valued functions of a hyperbolic variable
(see arXiv:1001.0552). Using this relation we solve the problem of the
transmission through an inhomogeneous layer of a normally incident
electromagnetic time-dependent plane wave. The solution is written in terms of
a pair of Darboux-associated transmutation operators (see arXiv:1111.4449), and
combined with the recent results on their construction (see arXiv:1208.6166,
arXiv:1306.2914) can be used for efficient computation of the transmitted
modulated signals. We develop the corresponding numerical method and illustrate
its performance with examples.
