  We study the absorption and dispersion properties of a weak tunable probe
field in a four-level Y-type atomic system driven by two strong laser
(coupling) fields within the framework of density matrix formalism. It is found
that the probe absorption profile displays double-electromagnetically induced
transparency (double-EIT) and it is shown how to control it by changing the
Rabi frequencies as well as the atom field detuning of the coupling fields.
