This is a theory for the effect of localization on the super-Poissonian noise of radiation propagating through an absorbing disordered waveguide. Localization suppresses both the mean photon current I and the noise power P, but the Fano factor P/I is found to remain unaffected. For strong absorption the Fano factor has the universal value 1+3f/2 (with f the Bose-Einstein function), regardless of whether the waveguide is long or short compared to the localization length.
Cite
@article{arxiv.cond-mat/0001157,
title = {Photonic excess noise and wave localization},
author = {C. W. J. Beenakker and M. Patra and P. W. Brouwer},
journal= {arXiv preprint arXiv:cond-mat/0001157},
year = {2007}
}