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Rotation sensing based on a side-coupled spaced sequence of resonators
He Tian1, Yundong Zhang, Xuenan Zhang
1Institute of Opto-Electronics and National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150080, China.
Optics Express
|June 7, 2011
Summary
This study explores the Sagnac effect in side-coupled spaced sequence of resonators (SCSSOR). The findings indicate SCSSOR structures offer high sensitivity for rotation sensors and gyroscopes.
Area of Science:
- Photonics and optical sensing.
- Integrated optics and resonator devices.
Background:
- Conventional waveguides exhibit limited dispersion.
- Understanding the Sagnac effect in novel resonator structures is crucial for advanced sensing.
Purpose of the Study:
- Investigate the Sagnac effect in a side-coupled spaced sequence of resonators (SCSSOR).
- Derive and analyze the Sagnac phase difference in SCSSOR structures.
- Assess the potential of SCSSOR for rotation sensing applications.
Main Methods:
- Theoretical derivation of the Sagnac phase difference for SCSSOR.
- Analysis of sensitivity dependence on resonator number and dispersion intensity.
Main Results:
- The Sagnac effect in SCSSOR structures exhibits strong dispersion.
- Sensitivity is directly proportional to the number and dispersion intensity of resonators.
- SCSSOR structures do not require identical resonator circumferences, simplifying fabrication.
Conclusions:
- SCSSOR structures provide a promising platform for highly sensitive integrated rotation sensors.
- The derived Sagnac phase difference expression facilitates device design and optimization.
- These findings pave the way for compact and efficient optical gyroscopes.
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