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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
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Linear discrete diffraction and transverse localization of light in two-dimensional backbone lattices
1The MOE Key Laboratory of Weak Light Nonlinear Photonics, Nankai University, Tianjin, China.
Optics Express
|October 14, 2010
Summary
Increasing refractive index modulation in backbone lattices flattens light
Area of Science:
- Photonics and Optical Physics
- Solid-State Physics
Background:
- Discrete diffraction describes light propagation in periodic structures.
- Backbone lattices offer unique optical properties.
- Understanding light localization is crucial for optical devices.
Purpose of the Study:
- To investigate the linear discrete diffraction of light in 2D backbone lattices.
- To analyze the impact of refractive index modulation depth on light propagation.
- To explore the conditions for light localization in these lattices.
Main Methods:
- Theoretical analysis of Floquet-Bloch modes.
- Numerical simulations of light propagation.
- Examination of band structures and diffraction patterns.
Main Results:
- Higher refractive index modulation opens band gaps and flattens band curves.
- Diffraction patterns converge with increasing modulation depth.
- Transverse light localization occurs at high modulation depths due to near-zero mode velocities.
Conclusions:
- Linear transverse localization of light is achievable in backbone lattices.
- This phenomenon offers potential for controlling light propagation.
- Applications include optical signal processing and light navigation.
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