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Related Experiment Videos

Piezoelectric bimorph optical-fiber sensor.

Fengguo Sun1, Gaozhi Xiao, Zhiyi Zhang

  • 1Photonic Systems Group, Institute for National Measurement Standards, National Research Council, M-50 Montreal Road, Ottawa, Canada K1A 0R6. fengguo.sun@nrc.ca

Applied Optics
|April 7, 2004
PubMed
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We developed a new high-voltage optical-fiber sensor. It uses a piezoelectric transducer to convert voltage into measurable optical coupling loss, enabling precise high-voltage detection.

Area of Science:

  • Photonics
  • Materials Science
  • Electrical Engineering

Background:

  • Accurate high-voltage measurement is crucial in various industrial and research applications.
  • Existing methods may have limitations in terms of sensitivity, size, or safety.

Purpose of the Study:

  • To propose and demonstrate a novel optical-fiber sensor for high-voltage measurement.
  • To establish a method for converting electrical signals into optical signals for sensing.

Main Methods:

  • The sensor utilizes an emitting optical fiber and a receiving optical fiber.
  • A piezoelectric bimorph transducer is employed to create a displacement proportional to the applied voltage.
  • The receiving fiber is mounted on the transducer, and its displacement alters the optical coupling with the emitting fiber.

Related Experiment Videos

Main Results:

  • A displacement of the receiving fiber was induced by applying voltage to the piezoelectric transducer.
  • This displacement resulted in a measurable loss in optical coupling between the fibers.
  • The degree of optical coupling loss directly correlates with the applied voltage.

Conclusions:

  • The proposed optical-fiber sensor effectively measures high voltages.
  • This technology offers a novel approach for non-contact voltage sensing.
  • The sensor's performance relies on the precise control of optical coupling via piezoelectric displacement.