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Beam control and multi-color routing with spatial photonic defect modes.
1Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA.
Optics Express
|September 23, 2009
Summary
Researchers control light beams in photonic lattices using spatial bandgap guidance. This enables tunable redirection, blocking, and splitting of light for advanced optical routing applications.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Two-dimensional photonic lattices offer unique light manipulation properties.
- Spatial bandgap guidance is a key mechanism for controlling light propagation in periodic structures.
Purpose of the Study:
- To demonstrate tunable control over light beam redirection, blocking, and splitting.
- To explore the use of defect channels for guided light propagation.
- To achieve linear control of beam propagation and multicolor routing.
Main Methods:
- Fabrication of two-dimensional photonic lattices with embedded defect channels.
- Utilizing spatial bandgap guidance principles to control light propagation.
- Designing specific junctions and surface structures within the lattices.
Main Results:
- Successfully demonstrated tunable redirection, blocking, and splitting of light beams.
- Achieved linear control over beam propagation along defect channels.
- Showcased multicolor routing capabilities using engineered lattice structures.
Conclusions:
- Spatial bandgap guidance in 2D photonic lattices provides a versatile platform for light beam manipulation.
- Engineered defect channels, junctions, and surface structures enable precise control and routing of light.
- This work opens possibilities for advanced optical devices and integrated photonic circuits.
