  We experimentally demonstrated entanglement extraction scheme by using
photons at the telecommunication band for optical-fiber-based quantum
communications. We generated two pairs of non-degenerate polarization entangled
photons at 780~nm and 1551~nm by spontaneous parametric down-conversion and
distributed the two photons at 1551~nm through a collective phase damping
channel which gives the same amount of random phase shift on the two photons.
Through local operation and classical communication, we extracted an entangled
photon pair from two phase-disturbed photon pairs. An observed fidelity of the
extracted photon pair to a maximally entangled photon pair was 0.73 $\pm$ 0.07
which clearly shows the recovery of entanglement.
