Effect of a weak longitudinal modulation in refractive index on   transverse localization of light in 1D disordered waveguide lattices
  We report the enhancement of the effect of transverse localization of light (TL) in presence of a weak longitudinal modulation of refractive index in disordered waveguide lattices. In our chosen lattices, tunneling inhibition along length favors to achieve the diffraction-free propagation along with the simultaneous presence of transverse disorder. Results will be useful to tune the threshold value of disorder to achieve localized light. 
Somnath Ghosh, R. K. Varsheny and Bishnu P. Pal
physics.optics