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A Multi-Parameter Integrated Sensor Based on Selectively Filled D-Shaped Photonic Crystal Fiber.

Dan Yang1, Tiesheng Wu1,2,3, Yiping Wang2,3

  • 1Guangxi Key Laboratory of Wireless Broadband Communication and Signal Processing, School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China.

Materials (Basel, Switzerland)
|April 23, 2022
PubMed
Summary

This study introduces a D-shaped photonic crystal fiber (PCF) sensor for simultaneous detection of refractive index, magnetic field, temperature, and voltage. The novel design offers high sensitivity for multi-parameter optical sensing applications.

Keywords:
D-shaped photonic crystal fibermulti-parameterselective fillingsensor

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Area of Science:

  • Photonics
  • Optical Sensing
  • Materials Science

Background:

  • Photonic crystal fibers (PCFs) offer unique light-confining properties for advanced sensor development.
  • Integrated multi-parameter sensors are crucial for comprehensive environmental and industrial monitoring.
  • D-shaped PCFs provide a versatile platform for surface functionalization and selective material infiltration.

Purpose of the Study:

  • To propose and numerically investigate a novel multi-parameter integrated sensor.
  • To achieve simultaneous and independent detection of refractive index, magnetic field, temperature, and voltage.
  • To explore the potential of selectively filled D-shaped PCF for advanced optical sensing.

Main Methods:

  • Numerical investigation using the finite element method (FEM).
  • Design of a D-shaped PCF coated with a gold nano-film for surface plasmon resonance (SPR).
  • Selective filling of cladding air holes with magnetic fluid, toluene, and nematic liquid crystal (NLC E7).

Main Results:

  • The sensor demonstrated independent measurement capabilities for four parameters.
  • High sensitivities were achieved: 4600 nm/RIU for refractive index, 1.375 nm/Oe for magnetic field, 15.143 nm/°C for temperature, and 0.971 nm/V for voltage.
  • The proposed structure shows potential for simultaneous multi-parameter optical sensing.

Conclusions:

  • A selectively filled D-shaped PCF sensor can effectively perform multi-parameter sensing.
  • The design offers a simple yet comprehensive approach to optical sensing.
  • This work paves the way for promising applications in integrated multi-parameter optical sensing systems.