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Sharp resonance with complete transmission in Thue-Morse microring resonators
Optics Express
|June 16, 2015
Summary
Thue-Morse microring resonators exhibit sharp resonances and complete transmission, outperforming traditional periodic structures in filtering quality. This quasi-periodic design offers high-Q resonances and consistent transmittance across various configurations.
Area of Science:
- Photonics
- Wave phenomena
- Materials science
Background:
- Traditional periodic structures in microring resonators face limitations in filtering quality.
- Quasi-periodic structures offer potential for enhanced optical properties.
- Microring resonators are crucial components in optical filtering and signal processing.
Purpose of the Study:
- To investigate the optical filtering properties of Thue-Morse microring resonators.
- To demonstrate sharp resonances with complete transmission in quasi-periodic microring structures.
- To develop an analytical method for predicting resonance peaks in these novel structures.
Main Methods:
- Fabrication and characterization of Thue-Morse microring resonators.
- Analysis of transmission spectra to identify resonance characteristics.
- Comparison of filtering performance with traditional periodic microring resonators.
- Development of a gap map-based analytical method for resonance prediction.
Main Results:
- Achieved high-Q resonances with complete transmission in Thue-Morse microring resonators.
- Demonstrated that maximum transmittance remains 1 in major-band regions for varying radii proportions.
- Confirmed complete transmission in mini-band regions for arbitrary coupling.
- Successfully proposed an analytical method to predict resonance peaks in mini-band regions.
Conclusions:
- Thue-Morse microring resonators offer superior filtering quality compared to periodic structures.
- The quasi-periodic design enables robust and high-performance optical filtering.
- The proposed analytical method provides an effective tool for designing and optimizing these resonators.
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