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Updated: Jun 17, 2026
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Quantitative modeling of coupling-induced resonance frequency shift in microring resonators
Qing Li1, Mohammad Soltani, Amir H Atabaki
1School of Electrical and Computer Engineering, Georgia Institute of Technology, 777 Atlantic Drive NW, Atlanta, GA 30332-0250, USA. qli6@gatech.edu
Optics Express
|January 7, 2010
Summary
We studied coupling-induced resonance frequency shift (CIFS) in dielectric microring resonators. A new model, extending coupled mode theory, accurately predicts CIFS, enabling practical device design without complex simulations.
Area of Science:
- Photonics and Optical Engineering
- Materials Science and Nanotechnology
Background:
- Dielectric microring resonators are crucial for integrated photonics.
- Understanding coupling-induced resonance frequency shift (CIFS) is vital for device performance.
Purpose of the Study:
- To investigate the behavior of CIFS in dielectric microring resonators.
- To develop a predictive model for CIFS based on coupling region phase responses.
Main Methods:
- Rigorous numerical simulations of various resonator geometries.
- Extension of first-order coupled mode theory (CMT) to second order.
- Inclusion of contributions from the bent sections of practical resonators.
Main Results:
- A validated model for the phase responses of the coupling structure was developed.
- The model accurately predicts CIFS behavior, aligning well with simulation data.
- The model incorporates essential physical aspects of practical microring resonators.
Conclusions:
- The developed model enhances the understanding of CIFS in microring resonators.
- This model facilitates CIFS calculation for practical applications, reducing the need for extensive simulations.
- The findings contribute to the design and optimization of photonic devices.
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