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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
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Light transport and localization in two-dimensional correlated disorder
Gaurasundar M Conley1, Matteo Burresi2, Filippo Pratesi3
1European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy and Physics Department, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland.
Short-range disorder correlations in photonic structures enable precise control over light transport and localization. This disorder engineering offers tunable control over light propagation in 2D systems.
Area of Science:
- Photonics
- Wave Propagation
- Disordered Media
Background:
- Structural correlations in disordered media significantly impact wave propagation.
- Understanding light transport and localization in disordered photonic structures is crucial for advanced optical applications.
Purpose of the Study:
- To theoretically investigate the effects of short-range correlated disorder on light transport and localization in 2D photonic structures.
- To explore the potential of disorder engineering for controlling light propagation.
Main Methods:
- Semi-analytical approach using the Baus-Colot model for the structure factor of correlated media.
- Modified independent scattering approximation.
- Numerical finite-difference time-domain (FDTD) calculations for validation.
Main Results:
- Short-range correlations allow tuning the transport mean free path by over a factor of 2.
- Localization length can be controlled over several orders of magnitude.
- Numerical simulations confirm the theoretical predictions.
Conclusions:
- Disorder engineering provides fine control over light transport and localization in planar photonic geometries.
- This control opens new avenues for fundamental and applied photonics research.
- Correlated disorder is a key parameter for manipulating light propagation.
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