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Band engineering and periodic defects doping by lattices compounding.
Optics Express
|June 6, 2009
Summary
Compounding 2D lattices creates complete photonic band gaps, with properties tunable by lattice parameters and relative positioning. Defect modes
Area of Science:
- Photonics
- Materials Science
- Condensed Matter Physics
Background:
- Photonic band gaps (PBGs) are crucial for controlling light propagation.
- Designing complex photonic structures with tunable band gaps is an active research area.
Purpose of the Study:
- To investigate the photonic band gap properties of compound 2D lattices.
- To explore the influence of lattice parameters and relative positions on band gap formation.
- To analyze defect modes in compound structures and their dependence on lattice constants.
Main Methods:
- Numerical simulations of 2D compound lattice structures.
- Analysis of transmitted and reflected spectra to determine band gap characteristics.
- Systematic variation of lattice parameters and relative positions.
Main Results:
- Compound 2D lattices can exhibit single or multiple complete photonic band gaps.
- Photonic band gap properties are sensitive to individual lattice parameters and their arrangement.
- Defect modes show direction-dependent behavior influenced by the ratio of periodic constants (a2/a).
- Optimizing rod size in the larger lattice constant (a2) allows for diverse defect mode engineering.
Conclusions:
- 2D lattice compounding offers a versatile approach to designing photonic band gaps.
- Control over defect mode properties is achievable through structural optimization.
- The findings provide insights for developing novel photonic devices with tailored optical responses.
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