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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Antiresonant reflecting photonic crystal optical waveguides
Optics Letters
|November 21, 2007
Summary
We developed a theory for antiresonant reflecting optical waveguides. Waveguide properties depend on layer thickness and refractive index contrast, not cladding period, with attenuation controlled by layer count.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Photonic bandgap (PBG) optical waveguides are crucial for light manipulation.
- Antiresonant reflecting optical waveguides offer an alternative guidance mechanism.
- Understanding their spectral and attenuation properties is key for device design.
Purpose of the Study:
- To develop a simple analytical theory for low-index core antiresonant reflecting optical waveguides.
- To identify key design parameters influencing spectral and attenuation properties.
- To explore the implications for photonic bandgap fibers.
Main Methods:
- Formulation of a simple analytical theory for antiresonant reflecting guidance.
- Identification of a new guidance regime.
- Numerical simulations using the beam propagation method.
Main Results:
- Spectral properties are primarily determined by high-index layer thickness and refractive-index contrast.
- Spectral properties show low sensitivity to the cladding layer period.
- Attenuation properties are controlled by the number of high/low-index cladding layers.
- Analytical model predictions are confirmed by numerical simulations.
Conclusions:
- The analytical theory provides a simplified understanding of antiresonant reflecting optical waveguides.
- Design guidelines are established for controlling spectral and attenuation characteristics.
- The findings have direct implications for the design and optimization of photonic bandgap fibers.
