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Related Experiment Videos

Single-crystal Y2O3-ZrO2 rectangular waveguides for ultrahigh-temperature sensing applications.

Limin Tong1

  • 1Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA. ltong@fas.harvard.edu

Applied Optics
|July 9, 2002
PubMed
Summary

New yttria-zirconia single-crystal waveguides offer ultrahigh-temperature sensing. These durable optical components exhibit low loss and extreme heat resistance, outperforming optical fibers.

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Area of Science:

  • Materials Science
  • Optical Engineering
  • Sensor Technology

Background:

  • Ultrahigh-temperature environments pose significant challenges for conventional sensing materials.
  • Yttria-stabilized zirconia (Y2O3-ZrO2) exhibits promising properties for extreme conditions.

Purpose of the Study:

  • To develop and evaluate high-quality Y2O3-ZrO2 single-crystal rectangular waveguides for ultrahigh-temperature sensing.
  • To assess the optical loss, thermal stability, and mechanical properties of these novel waveguides.

Main Methods:

  • Fabrication of five Y2O3-ZrO2 single-crystal rectangular waveguides (0.55-1.12 mm width, 52-65 mm length) from a precisely cut and polished bulky cubic crystal.
  • Measurement of optical loss at a 900-nm wavelength.
  • Testing of thermal survival limits, mechanical strength, and chemical resistance.

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Main Results:

  • Average optical loss of approximately 0.016 dB/cm at 900 nm, significantly lower than Y2O3-ZrO2 single-crystal optical fibers.
  • Waveguides successfully withstood temperatures exceeding 2,300 degrees C.
  • Demonstrated acceptable mechanical strength and chemical resistance.

Conclusions:

  • Y2O3-ZrO2 single-crystal rectangular waveguides are suitable for ultrahigh-temperature sensing applications.
  • The developed waveguides offer superior performance compared to existing Y2O3-ZrO2 optical fibers.
  • These findings pave the way for advanced sensing solutions in extreme thermal environments.