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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
08:32

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Published on: January 29, 2013

High dynamic range electric field sensor for electromagnetic pulse detection.

Che-Yun Lin1, Alan X Wang, Beom Suk Lee

  • 1Microelectronics Research Center, The University of Texas at Austin, Austin, TX 78758, USA.

Optics Express
|September 22, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel, all-optical electric field sensor using electro-optic polymers. This high dynamic range sensor effectively measures electromagnetic fields across a wide range of intensities.

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Area of Science:

  • Photonics and Electromagnetics
  • Materials Science

Background:

  • Electric field sensing is crucial for various applications, including electromagnetic compatibility testing and scientific research.
  • Existing sensors often face limitations in dynamic range, bandwidth, or require direct electrical contact.

Purpose of the Study:

  • To design and fabricate a high dynamic range, electrode-less, all-optical electric field sensor.
  • To demonstrate the sensor's capability for wideband electromagnetic wave detection.

Main Methods:

  • Utilized a domain-inverted electro-optic (E-O) polymer Y-fed directional coupler.
  • Fabricated the sensor using standard processing techniques for E-O polymer photonic devices.
  • Conducted experimental measurements at a frequency of 1 GHz.

Main Results:

  • Achieved effective detection of electric fields ranging from 16.7 V/m to 750 kV/m.
  • Demonstrated a spurious-free measurement range of 70 dB.
  • Validated the sensor's performance for high dynamic range electric field measurements.

Conclusions:

  • The developed E-O polymer sensor offers a promising solution for high dynamic range electric field detection.
  • The all-optical, electrode-less design simplifies integration and broadens applicability.
  • This technology advances electromagnetic wave detection capabilities.