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Gas Pressure Sensor Based on BDK-Doped Polymer Optical Fiber
Xin Cheng1, Yi Liu2,3, Changyuan Yu4
1Photonics Research Centre, Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China. chengxin250@163.com.
Micromachines
|October 27, 2019
Summary
This study introduces a highly sensitive gas pressure sensor using benzyl-dimethylketal (BDK)-doped polymer optical fiber Bragg grating (POFBG). The novel sensor demonstrates excellent sensitivity for detecting air pressure changes.
Area of Science:
- Materials Science
- Optical Sensors
- Chemical Engineering
Background:
- Polymer optical fiber Bragg gratings (POFBGs) are utilized for sensing applications.
- Developing high-sensitivity gas pressure sensors is crucial for various industrial and environmental monitoring tasks.
Purpose of the Study:
- To present a novel gas pressure sensor with enhanced sensitivity.
- To investigate the air pressure response and stability of the developed sensor.
Main Methods:
- Fabrication of a benzyl-dimethylketal (BDK)-doped POFBG.
- Characterization of the sensor's response to positive and negative air pressure.
- Analysis of the sensor's stability and response behavior.
Main Results:
- Achieved high sensitivities of 8.12 pm/kPa (positive) and 12.12 pm/kPa (negative) air pressure.
- The high sensitivity is attributed to the porous chemical structure of the BDK-doped polymer.
- Demonstrated stability and consistent response under air pressure variations.
Conclusions:
- The BDK-doped POFBG sensor offers a promising solution for high-sensitivity gas pressure detection.
- The study provides new insights into the air pressure response mechanism and sensitivity differences in such sensors.
- This research serves as a valuable reference for future development of advanced optical pressure sensors.
