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Updated: Jun 14, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Coupling of guided light through a periodic multilayer.
This study explores a new coupler design using periodic multilayers for Bragg wave coupling, potentially easing fabrication tolerances compared to traditional evanescent wave couplers.
Area of Science:
- Optoelectronics
- Materials Science
- Waveguide Technology
Background:
- Conventional evanescent wave couplers require stringent fabrication tolerances.
- Periodic multilayers offer an alternative approach to waveguide coupling.
Purpose of the Study:
- To investigate a novel coupler structure utilizing periodic multilayers.
- To assess the feasibility of Bragg wave coupling for relaxed fabrication.
Main Methods:
- Analysis of coupler structure with periodic multilayer.
- Theoretical study of Bragg wave coupling mechanism.
- Comparison with evanescent wave coupling principles.
Main Results:
- Bragg wave coupling in periodic multilayer structures is proposed.
- Relaxed fabrication tolerance is achievable due to Bragg wave characteristics.
- Standard fabrication techniques can be employed.
Conclusions:
- Periodic multilayer couplers offer a viable alternative to evanescent wave couplers.
- The Bragg coupling mechanism significantly simplifies fabrication requirements.
- This approach enhances the practicality of fabricating optical couplers.
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