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Updated: Jan 26, 2026
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
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Mode coupling in a terahertz multi-mode whispering-gallery-mode resonator
Optics Letters
|April 16, 2019
Summary
Mode coupling in terahertz whispering-gallery modes (WGMs) was observed in a Teflon resonator. This study models resonance and splitting effects, aiding terahertz device design.
Area of Science:
- Physics
- Optics
- Materials Science
Background:
- Whispering-gallery modes (WGMs) are crucial for optical resonators.
- Understanding mode coupling is essential for advanced optical device design.
- Terahertz (THz) technology requires precise control over resonant modes.
Purpose of the Study:
- To investigate and analyze mode-coupling effects in terahertz WGMs.
- To model and reproduce resonance phenomena caused by mode coupling.
- To provide insights for designing THz devices like dual-band filters.
Main Methods:
- Utilizing an extended transfer matrix method for theoretical analysis.
- Designing and fabricating a high-Q terahertz Teflon ring resonator.
- Observing and analyzing coupling effects between two WGMs.
Main Results:
- Successfully observed coupling effects between two WGMs in a Teflon resonator.
- Modeled and reproduced single-band and asymmetric dual-band resonances.
- Theoretically illustrated the terahertz mode splitting effect due to coupling.
Conclusions:
- Mode coupling significantly influences terahertz WGM behavior.
- The extended transfer matrix method accurately models these effects.
- Findings aid in the design of terahertz devices, particularly dual-band filters.
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