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Spatial localization of electromagnetic modes in noise-like random one-dimensional dielectric heterostructures

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Abstract

We investigate the propagation of electromagnetic signals in a new type of layered system denominated by noise-like random heterostructures designed on the basis of porous silicon layers. The photonic bandgap can be modulated with the noise amplitude. These structures are suitable for spatial localization of electromagnetic modes, depending on the noise amplitude and seed of generation, reaching values of a few tens in the confined relative field intensity in structures simulated, including losses. Absorption causes the selective spatial localization of modes close to the surface of incidence. This kind of heterostructure could be used in photonics and laser applications.

© 2017 Optical Society of America

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