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Temporal coupled-mode theory of ring-bus-ring Mach-Zehnder interferometer
Yanbing Zhang1, Ting Mei, Dao Hua Zhang
1Department of Electric and Electronic Engineering, Nanyang Technological University, Singapore.
Applied Optics
|February 7, 2012
Summary
A new temporal coupled-mode theory (TCMT) accurately models ring-bus-ring Mach-Zehnder interferometers. This energy-conserving model explains unique intercavity interactions and mimics electromagnetically induced transparency.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Interferometry
Background:
- Ring-bus-ring Mach-Zehnder interferometers offer unique optical functionalities.
- Existing theoretical models may not fully capture the complex intercavity dynamics in such devices.
- Understanding mode decay and interaction is crucial for device performance.
Purpose of the Study:
- To develop a new theoretical framework, the temporal coupled-mode theory (TCMT), for analyzing ring-bus-ring Mach-Zehnder interferometers.
- To incorporate energy conservation principles into the theoretical model.
- To accurately predict device behavior and compare it with experimental data.
Main Methods:
- Development of the temporal coupled-mode theory (TCMT) with energy conservation.
- Analysis of intercavity interaction facilitated by a tricoupler.
- Relating TCMT to transfer matrix formalism and Q factor.
- Comparison of theoretical predictions with experimental results.
Main Results:
- The developed TCMT accurately models the ring-bus-ring Mach-Zehnder interferometer.
- The tricoupler leads to quantitatively different mode decay compared to other resonator schemes.
- TCMT predictions show good agreement with experimental data.
- The theoretical analysis successfully mimics electromagnetically induced transparency (EIT).
Conclusions:
- The energy-conserving TCMT provides an accurate and illustrative method for analyzing ring-bus-ring Mach-Zehnder interferometers.
- The model's ability to mimic EIT highlights its potential for understanding transparent resonance phenomena.
- The analysis framework is applicable to similar optical resonator configurations.
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