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Updated: Jun 28, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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A fiber-optic cyclodextrin-based sensor.

J P Alarie1, T Vo-Dinh

  • 1Advanced Monitoring Development Group, Health and Safety Research Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6101, U.S.A.

Talanta
|May 1, 1991
PubMed
Summary
This summary is machine-generated.

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A new fiber-optic cyclodextrin-based (FCD) sensor offers significantly enhanced sensitivity for detecting analytes. This innovative sensor demonstrates high selectivity, proving useful for environmental water sample analysis.

Area of Science:

  • Analytical Chemistry
  • Chemical Sensors
  • Optical Fiber Technology

Background:

  • Development of sensitive and selective chemical sensors is crucial for environmental monitoring.
  • Fiber-optic sensors offer advantages in remote and in-situ measurements.
  • Cyclodextrins are effective host molecules for sensing applications.

Purpose of the Study:

  • To develop and characterize a novel fiber-optic cyclodextrin-based (FCD) sensor.
  • To evaluate the sensitivity and selectivity of the FCD sensor.
  • To demonstrate the practical applicability of the FCD sensor in environmental samples.

Main Methods:

  • Immobilization of beta-cyclodextrin on an optical fiber tip.
  • Utilized laser excitation and fluorescence detection.

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  • Tested sensor performance with pyrene as a model compound and 5,6-benzoquinoline as an interferent.

    • Main Results:

    • The FCD sensor exhibited 14-fold greater sensitivity compared to a bare optical fiber after a 10-min incubation.
    • Demonstrated high selectivity using pyrene and successfully identified interference from 5,6-benzoquinoline.
    • Validated the sensor's utility with a contaminated environmental ground water sample.

    Conclusions:

    • The developed FCD sensor is a highly sensitive and selective analytical device.
    • The sensor shows promise for real-world applications in environmental water quality monitoring.
    • Fiber-optic technology combined with cyclodextrin offers a robust platform for chemical sensing.