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A temperature sensor based on a polymer optical fiber macro-bend.

Alberto Tapetado Moraleda1, Carmen Vázquez García, Joseba Zubia Zaballa

  • 1Departamento de Tecnología Electrónica, Universidad Carlos III de Madrid, Avenida de la Universidad 30, Leganés 28911, Spain. atapetad@ing.uc3m.es.

Sensors (Basel, Switzerland)
|October 1, 2013
PubMed
Summary

A new plastic optical fiber (POF) macrobend sensor offers linear temperature response. This cost-effective sensor system achieves high resolution for practical applications.

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Area of Science:

  • Materials Science
  • Optical Engineering
  • Sensor Technology

Background:

  • Plastic optical fibers (POFs) are increasingly utilized in sensing applications due to their flexibility and cost-effectiveness.
  • Macrobending in optical fibers can be exploited for sensing purposes, but its performance is influenced by environmental factors.
  • Accurate temperature sensing is crucial in various industrial and scientific fields.

Purpose of the Study:

  • To design and develop a novel macrobend temperature sensor utilizing plastic optical fiber.
  • To investigate the sensor's response characteristics, including linearity and sensitivity.
  • To analyze the impact of surrounding media on the sensor's performance for practical implementation.

Main Methods:

  • Fabrication of a plastic optical fiber (POF) macrobend sensor.

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  • Characterization of the sensor's response to temperature variations at a fixed bend radius.
  • Implementation of a reference system using a dummy fiber-optic sensor for enhanced resolution.
  • Experimental analysis of the sensor's behavior in different surrounding media.
  • Comparison of experimental data with theoretical bend loss calculations.

    • Main Results:

    • The developed POF macrobend sensor exhibits a linear response to temperature changes at a constant bend radius.
    • The sensor system achieved a temperature resolution below 0.3 °C.
    • The surrounding medium significantly affects the practical implementation and performance of the macrobend POF sensor.
    • Experimental results demonstrated good agreement with theoretical bend loss calculations.

    Conclusions:

    • The plastic optical fiber (POF) macrobend sensor is a viable technology for linear temperature measurement.
    • The sensor system provides high resolution and is suitable for practical applications.
    • Understanding the influence of surrounding media is critical for optimizing macrobend POF sensor deployment.
    • The developed sensor offers a cost-effective and robust solution for temperature monitoring.