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Analysis of dual coupler nested coupled cavities.
Applied Optics
|December 8, 2017
Summary
This study introduces a novel dual-coupler nested cavity configuration for coupled ring resonators, optimizing spectral characteristics for optical systems requiring narrow spectral width and broad free spectral range.
Area of Science:
- Photonics and Optical Engineering
- Integrated Optics
- Resonator Systems
Background:
- Coupled ring resonators are fundamental components in various optical systems.
- Key performance metrics include narrow full width at half maximum (FWHM) and a large free spectral range (FSR).
- Existing configurations may not optimally meet these demanding requirements.
Purpose of the Study:
- To propose and theoretically analyze a new passive coupled cavity configuration.
- To investigate a dual-coupler nested cavity design.
- To derive analytical expressions for spectral characteristics and compare with design curves.
Main Methods:
- Theoretical analysis of a proposed dual-coupler nested cavity configuration.
- Derivation of analytical expressions for spectral characteristics.
- Utilizing the transfer function to generate design curves.
- Comparative analysis against other coupled cavity configurations.
Main Results:
- Analytical expressions for spectral characteristics of the dual-coupler nested cavity were obtained.
- Design curves were generated and validated against analytical results.
- The proposed configuration's performance was benchmarked against existing coupled cavity designs.
Conclusions:
- The proposed dual-coupler nested cavity configuration offers a promising approach for optical systems.
- It provides a pathway to achieve desired narrow FWHM and large FSR.
- Further research can explore experimental validation and specific applications.

