  In disordered two dimensional Chern insulators, a single bulk extended mode
is predicted to exist per band, up to a critical disorder strength; all the
other bulk modes are localized. This behavior contrasts strongly with
topologically trivial two-dimensional phases, whose modes all become localized
in the presence of disorder. Using a tight-binding model of a realistic
photonic Chern insulator, we show that delocalized bulk eigenstates can be
observed in an experimentally realistic setting. This requires the selective
use of resonator losses to suppress topological edge states, and acquiring
sufficiently large ensemble sizes using variable resonator detunings.
