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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
Published on: July 29, 2013
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Light focusing in the Anderson regime
Marco Leonetti1, Salman Karbasi2, Arash Mafi2
11] IPCF-CNR c/o Physics Department, University of Rome La Sapienza, P.le A. Moro 2, 00185 Roma, Italy [2] Center for Life Nano Science @Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena, 291, 00161 Roma, Italy.
Nature Communications
|July 30, 2014
Summary
Researchers used adaptive optics to focus light in disordered optical fibers, achieving a propagation-invariant beam. This demonstrates efficient light focusing in Anderson localization regimes, regardless of fiber length.
Area of Science:
- Wave physics
- Photonics
- Condensed matter physics
Background:
- Anderson localization describes the inhibition of diffusion and localization of waves in disordered media.
- Disordered optical fibers present unique challenges for light propagation and focusing.
Purpose of the Study:
- To achieve efficient light focusing in disordered optical fibers within the Anderson localization regime.
- To investigate the generation of propagation-invariant beams using adaptive optics and wavefront shaping.
Main Methods:
- Exploitation of adaptive optics for wavefront shaping and optimization.
- Utilizing disordered optical fibers to study light localization phenomena.
- Excitation of Anderson localization using extended speckled beams.
Main Results:
- Successful generation of a propagation-invariant beam where light is trapped transversally by disorder.
- Demonstration that Anderson localization can be excited by extended speckled beams.
- Disordered fibers enable more efficient focusing than standard fibers, independent of length, due to transverse localization effects.
Conclusions:
- Adaptive optics can effectively control light propagation in disordered optical fibers.
- Anderson localization regimes offer enhanced focusing capabilities in optical systems.
- Transverse localization in disordered fibers provides a mechanism for efficient, length-independent focusing.
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