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Light localization induced by a random imaginary refractive index
2014
Physical Review A. Atomic, Molecular, and Optical Physics
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We show the emergence of light localization in arrays of coupled optical waveguides with randomness only in the imaginary part of their permittivity and develop a one-parameter scaling theory for the normalized participation number of the Floquet-Bloch modes. This localization introduces a new length scale in the decay of the autocorrelation function of a paraxial beam propagation. Our results are relevant to a vast family of systems with randomness in the dissipative part of their impedance spatial profile.
doi:10.1103/physreva.90.043815
fatcat:lnvehlydlbdwnkblyl6vkzeo4q