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Related Experiment Video

Updated: Jun 14, 2026

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

Temperature performance of a macrobending single-mode fiber-based refractometer.

Pengfei Wang1, Yuliya Semenova, Qiang Wu

  • 1Photonics Research Center, School of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland. pengfei.wang@dit.ie

Applied Optics
|April 2, 2010
PubMed
Summary

This study shows how temperature affects macrobending fiber refractometers. A ratiometric scheme allows for accurate refractive index measurements and temperature correction, validated by theoretical and experimental results.

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Area of Science:

  • Optics and Photonics
  • Fiber Optic Sensors
  • Materials Science

Background:

  • Refractive index measurement is crucial for various applications.
  • Fiber optic sensors offer advantages in harsh environments.
  • Temperature fluctuations can impact sensor accuracy.

Purpose of the Study:

  • To investigate the temperature dependence of a macrobending single-mode fiber refractometer.
  • To develop and validate a ratiometric scheme for enhanced measurement accuracy.
  • To enable effective temperature compensation in fiber optic sensing.

Main Methods:

  • Theoretical modeling using scalar approximation for temperature-dependent loss.
  • Experimental setup of an all-fiber ratiometric measurement system.

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Last Updated: Jun 14, 2026

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  • Comparison of calculated and measured results using SMF28 fiber.

    • Main Results:

    • Good agreement between theoretical predictions and experimental measurements.
    • Demonstrated monotonic change in ratio response with temperature.
    • Confirmation of temperature's significant effect on refractive index measurements.

    Conclusions:

    • The proposed macrobending fiber refractometer with a ratiometric scheme is effective for refractive index sensing.
    • The study validates the theoretical model for predicting temperature-dependent loss.
    • The findings enable a practical temperature correction process for fiber optic refractometers.