  We consider the propagation of classical and non-classical light in
multi-mode optical waveguides. We focus on the evolution of the few-photon
correlation functions, which, much like the light-intensity distribution in
such systems, evolve in a periodic manner, culminating in the 'revival' of the
initial correlation pattern at the end of each period. It is found that when
the input state possesses non trivial symmetries, the correlation revival
period can be longer than that of the intensity, and thus the same intensity
pattern can display different correlation patterns. We experimentally
demonstrate this effect for classical, pseudo-thermal light, and compare the
results with the predictions for non-classical, quantum light.
