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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Fresnel-reflection-based fiber sensor for high-temperature measurement.
Jingshun Pan1, Xuguang Huang, Yuming He
1Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, China.
The Review of Scientific Instruments
|April 3, 2012
Summary
A novel fiber sensor system accurately measures high temperatures using relative Fresnel reflection. This technique minimizes errors from light source fluctuations and environmental effects for improved stability.
Area of Science:
- Optical Engineering
- Materials Science
- Sensor Technology
Background:
- Accurate high-temperature measurement is critical in various industrial and scientific applications.
- Traditional temperature sensors can be susceptible to environmental interference and light source instability.
- Fiber optic sensors offer potential advantages due to their immunity to electromagnetic interference and remote sensing capabilities.
Purpose of the Study:
- To develop and validate a fiber sensor system for precise high-temperature measurements.
- To investigate a novel measurement technique that enhances system stability and reduces error sources.
- To demonstrate the effectiveness of relative intensity measurements for real-world applications.
Main Methods:
- A fiber sensor system was constructed using a diode laser, optical couplers, sensing fiber ends, and photodetectors.
- The measurement principle relies on analyzing the relative Fresnel reflection intensity.
- The thermo-optic effect of the fiber was utilized as a secondary measurement parameter.
Main Results:
- The developed system demonstrated the capability to measure high temperatures.
- The relative Fresnel reflection intensity technique effectively compensated for light source fluctuations.
- Environmental influences on the measurement were significantly reduced, improving system accuracy.
Conclusions:
- The proposed fiber sensor system provides a stable and accurate method for high-temperature measurement.
- The relative measurement approach enhances robustness against external disturbances and internal variations.
- This technology offers improved long-duration measurement stability, suitable for demanding applications.
