  We propose a scheme where strongly correlated photons generated inside a
hollow-core one-dimensional fiber filled with two cold atomic species can be
used to simulate the BCS-BEC crossover. We first show how stationary
light-matter excitations (polaritons) in the system can realize an optically
tunable two component Bose-Hubbard model, and then analyze the optical
parameters regime necessary to generate an effective Fermi-Hubbard model of
photons exhibiting Cooper pairing. The characteristic correlated phases of the
system can be efficiently observed due to the {\it in situ} accessibility of
the photon correlations with standard optical technology.
