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Draw Tower Optical Fibers with Functional Coatings and Their Possible Use in Distributed Sensor Technology.

Sandy Alomari1,2, Kenny Hey Tow1, Joao Pereira1

  • 1RISE Research Institutes of Sweden, RISE Fiberlab, Fibervägen 2-6, 824 50 Hudiksvall, Sweden.

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Summary
This summary is machine-generated.

Researchers developed full-length functional coatings on optical fibers for distributed sensing. This Pt:WO3 coated fiber shows promise for distributed hydrogen leak detection, enabling enhanced environmental monitoring.

Keywords:
distributed sensordraw towerfunctional coatinghydrogenoptical fiber

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Sensor Technology

Background:

  • Functional coatings on optical fibers are typically limited to point or quasi-distributed sensing.
  • Localized deposition techniques restrict the application of functional coatings to specific fiber sections.

Purpose of the Study:

  • To demonstrate the feasibility of full-length functional coatings on optical fibers.
  • To enable the use of functionalized optical fibers in distributed sensor technology.
  • To develop a novel distributed hydrogen sensor.

Main Methods:

  • Utilized a draw tower process for applying a platinum-tungsten oxide (Pt:WO3) nanocomposite polymer functional coating along hundreds of meters of optical fiber.
  • Integrated the functionalized fiber into a distributed sensing configuration.
  • Tested the sensor's response to varying hydrogen concentrations (1% to 4% H2).

Main Results:

  • Successfully applied the Pt:WO3 functional coating along hundreds of meters of optical fiber using a draw tower process.
  • Demonstrated a clear change in sensor response with varying hydrogen concentrations.
  • Observed a temperature increase of 2.5 °C at 4% H2, indicating sensitivity to hydrogen levels.

Conclusions:

  • The draw tower process enables the creation of full-length functional coatings on optical fibers.
  • The Pt:WO3 functionalized fiber shows potential for distributed hydrogen leak detection.
  • This approach opens avenues for novel distributed sensing applications using various functional coatings over extended fiber lengths.