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Polarization discrimination properties of Bragg-reflection waveguides
Optics Letters
|September 23, 2009
Summary
Finite-clad Bragg-reflection waveguides can achieve high polarization discrimination through careful design. This leaky-wave analysis provides methods for optimizing these optical devices.
Area of Science:
- Optics and Photonics
- Waveguide Theory
Background:
- Bragg-reflection waveguides are crucial optical components.
- Understanding their propagation characteristics is essential for device design.
Purpose of the Study:
- To analyze finite-clad Bragg-reflection waveguides using a leaky-wave approach.
- To derive the eigenvalue equation for TE and TM modes.
- To investigate polarization discrimination capabilities.
Main Methods:
- Leaky-wave analysis was employed.
- The eigenvalue equation for TE and TM propagation was derived.
- Approximate expressions for the loss coefficient were developed.
Main Results:
- The eigenvalue equation for finite-clad Bragg-reflection waveguides was successfully derived.
- Approximate formulas for the loss coefficient were obtained.
- High polarization discrimination was demonstrated to be achievable.
Conclusions:
- The leaky-wave approach is effective for analyzing finite-clad Bragg-reflection waveguides.
- Optimized waveguide design can lead to significant polarization discrimination.
- These findings are valuable for developing advanced optical devices.
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