The main goal of this paper is to demonstrate the ability of a single pump paramet- ric amplifier with linearly polarized pumping radiation to divide orthogonally polarized optical signals, by emphasizing a signal with certain state of polarization from a combination of orthog- onally polarized signals. In the implemented solution two orthogonally polarized optical signals are placed on the same wavelength, and, after being highly attenuated, processed by the para- metric amplifier in such a way, that only a signal with a certain state of polarization is amplified. Such additional application of parametric amplifiers has not been demonstrated so far.