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Low-Cost Online Monitoring System for the Etching Process in Fiber Optic Sensors by Computer Vision.
Wenceslao Eduardo Rodríguez-Rodríguez1, Jesús Abraham Puente-Sujo1, Adolfo Josué Rodríguez-Rodríguez1
1Reynosa Rodhe Multidisciplinary Academic Unit, Department of Computational Sciences and Technologies, Computational Systems Academy, Autonomous University of Tamaulipas (UAT), Reynosa-San Fernando Highway, Reynosa 88779, Tamaulipas, Mexico.
This study introduces a new method for making fiber optic sensors using real-time computer vision to monitor diameter during etching. The developed system ensures stable etching for enhanced sensitivity in fiber optic glucose sensors.
Area of Science:
- Materials Science
- Optical Engineering
- Sensor Technology
Background:
- Fiber optic sensors offer high sensitivity for various applications.
- Etching processes are crucial for tailoring fiber optic sensor properties.
- Precise diameter control during etching is essential for reproducible sensor performance.
Purpose of the Study:
- To present a novel methodology for manufacturing etched fiber optic sensors.
- To implement real-time diameter monitoring during the Hydrofluoric Acid etching process.
- To enhance the sensitivity of fiber optic sensors through controlled diameter reduction.
Main Methods:
- Utilizing computer vision and virtual instrumentation with National Instruments technology.
- Employing a conventional digital microscope for real-time diameter measurement.
- Conducting Hydrofluoric Acid etching on fiber optic structures (SMS) with diameter monitoring.
Main Results:
- Demonstrated feasibility of reducing SMS structure diameter from 125 μm to approximately 42.5 μm.
- Verified stable system behavior during the etching process via multi-section diameter measurements.
- Successfully applied both unetched and etched sensors for glucose concentration sensing.
Conclusions:
- The developed real-time monitoring system enables precise control over the etching process.
- This methodology contributes to the advancement of high-sensitivity etched fiber optic sensors.
- The etched fiber optic sensors show promise for accurate glucose concentration detection.
