  We report on the experimental characterization of a novel nonlinear
liquid-filled hollow-core photonic-crystal fiber for the generation of photon
pairs at telecommunication wavelength through spontaneous four-wave-mixing. We
show that the optimization procedure in view of this application links the
choice of the nonlinear liquid to the design parameters of the fiber, and we
give an example of such an optimization at telecom wavelengths. Combining the
modeling of the fiber and classical characterization techniques at these
wavelengths, we identify, for the chosen fiber and liquid combination,
spontaneous four-wave-mixing phase matching frequency ranges with no Raman
scattering noise contamination. This is a first step toward obtaining a telecom
band fibered photon-pair source with a high signal-to-noise ratio.
