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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Nested fiber ring resonator enhanced Mach-Zehnder interferometer for temperature sensing.
Changqiu Yu1, Yundong Zhang, Xuenan Zhang
1National Key Laboratory of Tunable Laser Technology, Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China.
Applied Optics
|December 25, 2012
Summary
This study explores a nested fiber ring resonator coupled Mach-Zehnder interferometer sensor. It demonstrates high sensitivity and a low detection limit for precise temperature measurements.
Area of Science:
- Photonics
- Optical Sensing
- Interferometry
Background:
- Fiber ring resonators and Mach-Zehnder interferometers are key optical sensing components.
- Coupled resonator systems offer enhanced optical properties.
Purpose of the Study:
- To numerically investigate the sensing properties of a nested fiber ring resonator coupled Mach-Zehnder interferometer.
- To analyze the impact of phase bias on output intensity and sensor performance.
Main Methods:
- Numerical simulation of the nested fiber ring resonator coupled Mach-Zehnder interferometer.
- Introduction of a 0.5π phase bias in the reference arm.
- Intensity interrogation for analyzing sensitivity and detection limit.
Main Results:
- Sharp asymmetric line shapes observed around the resonance wavelength.
- Achieved sensitivity of 4.0866/°C and a detection limit of 7.341×10(-3)°C for a 30 dB signal-noise system.
- Demonstrated the influence of various parameters on sensor performance.
Conclusions:
- The nested fiber ring resonator coupled Mach-Zehnder interferometer exhibits excellent potential for high-sensitivity measurements.
- The proposed sensor design is suitable for precise temperature sensing applications.
