Related Experiment Video
Updated: May 18, 2026
09:19
Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
Published on: July 29, 2013
Generalized exact dynamic localization in curved coupled optical waveguide arrays
Arash Joushaghani1, Rajiv Iyer, Joyce K S Poon
1Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada. arash.joushaghani@utoronto.ca
Physical Review Letters
|September 26, 2012
Summary
Researchers achieved precise dynamic localization in curved waveguide arrays. Modifying curvature parameters significantly altered localization bandwidth, offering a new method for control.
Area of Science:
- Physics
- Optics
- Condensed Matter Physics
Background:
- Waveguide arrays are crucial for controlling light propagation.
- Dynamic localization is a phenomenon where light remains confined within a waveguide.
- Curvature in waveguide arrays can influence light localization.
Purpose of the Study:
- To investigate dynamic localization in strongly coupled curved waveguide arrays with non-square-wave periodic curvatures.
- To explore the effect of curvature profile on dynamic localization bandwidth.
- To develop a general method for controlling localization bandwidth.
Main Methods:
- Theoretical analysis of strongly coupled curved waveguide arrays.
- Numerical simulations of light propagation in arrays with periodic, non-square-wave curvatures.
- Investigation of deviated-square-wave curvature profiles.
Main Results:
- Exact dynamic localization was observed in the general case.
- A six-fold change in dynamic localization bandwidth was achieved by altering a design parameter in the deviated-square-wave curvature.
- A clear relationship between bandwidth and curvature profile was established.
Conclusions:
- The study provides a general method to control dynamic localization bandwidth in curved waveguide arrays.
- Precise control over light localization is achievable by tailoring curvature profiles.
- Findings have implications for optical device design and light manipulation.
Related Concept Videos
01:16Elastic Curve from the Load Distribution
The structural behavior of beams under distributed loads is critical for engineering analysis, which focuses on predicting how beams bend and react under such conditions. Different types of beams (e.g., cantilever, supported, or overhanging) behave differently under distributed load conditions.
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments. Initially, this...
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments. Initially, this...
01:28Standing Waves in a Cavity
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by: