Low-Cost Online Monitoring System for the Etching Process in Fiber Optic Sensors by Computer Vision

Wenceslao Eduardo Rodríguez-Rodríguez; Jesús Abraham Puente-Sujo; Adolfo Josué Rodríguez-Rodríguez; Ignacio R Matias; David Tomás Vargas-Requena; Luis Antonio García-Garza

doi:10.3390/s23135951

Low-Cost Online Monitoring System for the Etching Process in Fiber Optic Sensors by Computer Vision

Sensors (Basel). 2023 Jun 27;23(13):5951. doi: 10.3390/s23135951.

Authors

Wenceslao Eduardo Rodríguez-Rodríguez¹, Jesús Abraham Puente-Sujo¹, Adolfo Josué Rodríguez-Rodríguez¹, Ignacio R Matias², David Tomás Vargas-Requena¹, Luis Antonio García-Garza¹

Affiliations

¹ Reynosa 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.
² Department of Electrical, Electronic and Communications Engineering, Institute of Smart Cities (ISC), Public University of Navarre (UPNA), Campus de Arrosadia, 31006 Pamplona, Spain.

Abstract

The present research exposes a novel methodology to manufacture fiber optic sensors following the etching process by Hydrofluoric Acid deposition through a real-time monitoring diameter measurement by computer vision. This is based on virtual instrumentation developed with the National Instruments^® technology and a conventional digital microscope. Here, the system has been tested proving its feasibility by the SMS structure diameter reduction from its original diameter of 125 μ until approximately 42.5 μm. The results obtained have allowed us to demonstrate a stable state behavior of the developed system during the etching process through diameter measurement at three different structure sections. Therefore, this proposal will contribute to the etched fiber optic sensor development that requires reaching an enhanced sensitivity. Finally, to demonstrate the previously mentioned SMS without chemical corrosion, and the etched manufactured SMS, both have been applied as glucose concentration sensors.

Keywords: LabVIEW; SMS; computer vision; etching; fiber optic sensors; glucose.

MeSH terms

Fiber Optic Technology* / methods
Optical Fibers*

Grants and funding

This work was supported by the National Science and Technology Council (CONACYT); the Academic Multidisciplinary Reynosa-Rodhe Unit; and the Autonomous University of Tamaulipas. The previous funding was provided in Mexico.