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Formation of optimal-order necklace modes in one-dimensional random photonic superlattices

Mher Ghulinyan
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Abstract

We study the appearance of resonantly coupled optical modes, optical necklaces, in Anderson localized one-dimensional random superlattices through numerical calculations of the accumulated phase. The evolution of the optimal necklace order m* shows a gradual shift towards higher orders with increasing the sample size. We derive an empirical formula that predicts m* and discuss the situation when in a sample length L the number of degenerate in energy resonances exceeds the optimal one. We show how the \emph{extra} resonances are pushed out to the miniband edges of the necklace, thus reducing the order of the latter by multiples of two.

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Mher Ghulinyan. 2007-01-23. Formation of optimal-order necklace modes in one-dimensional random photonic superlattices. https://doi.org/10.1103/physreva.76.013822

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