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A second harmonic-mode filter for multiple physical quantity detection based on 1D layered hyperstructure.

Zhi-Jian Zhang1, Chu-Ming Guo1, Kai-Bo Qin1

  • 1The other authors are with the College of Electronic and Optical Engineering and the College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.

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Summary
This summary is machine-generated.

A novel filter using second harmonic generation (SHG) in a layered hyperstructure (LHS) enables cost-effective, continuous detection of multiple physical quantities (MPQ). This advances filter technology for sensing magnetic fields, angles, temperature, and material thickness.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Sensor Technology

Background:

  • Conventional filter designs often overlook the potential for detecting multiple physical quantities (MPQ).
  • There is a need for integrated sensing solutions that can simultaneously measure various parameters.

Purpose of the Study:

  • To propose and investigate a novel filter based on second harmonic generation (SHG) in a one-dimensional layered hyperstructure (LHS).
  • To demonstrate the capability of this LHS filter for the simultaneous, low-cost, and low-loss detection of multiple physical quantities (MPQ).

Main Methods:

  • Utilized the transfer matrix method for numerical investigations.
  • Analyzed performance parameters including linear measurement range and sensitivity.

Main Results:

  • The LHS filter demonstrated continuous detection of magnetic induction intensity (0.5-0.9 T, 2.05 GHz T⁻¹).
  • It also detected incident angle (30°-60°, 37.21 GHz/°), temperature (325-345 K, 39.49 GHz K⁻¹), and magnetized InSb thickness (0.39-0.43 μm, 66.1554 GHz μm⁻¹).

Conclusions:

  • The proposed SHG-based LHS filter provides a theoretical foundation for MPQ detection.
  • This research offers novel insights for advancements in filter technology and multi-parameter sensing.