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Related Experiment Video

Updated: May 31, 2026

Fabricating Metamaterials Using the Fiber Drawing Method
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Synthetic-Dimensions-Engineered Fiber-Optic Tamm Plasmon Metatips Enabling High-Dimensional Manipulation for Enhanced

Xinran Wei1, Yuzhang Liang1, Xuhui Zhang2,3

  • 1School of Physics, Dalian University of Technology, Dalian 116024, China.

ACS Nano
|May 29, 2026
PubMed
Summary

Engineered fiber-optic sensors using synthetic dimensions enhance hydrogen (H2) detection sensitivity and speed. This novel approach improves upon traditional designs for more efficient light field manipulation and faster response times.

Keywords:
Fiber-optic hydrogen sensingPhotocatalytic assistanceSensitivity enhancementSynthetic dimensionsTamm plasmon polariton (TPP)

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Area of Science:

  • Photonics
  • Nanotechnology
  • Chemical Sensing

Background:

  • Tamm plasmon polariton (TPP) nanofilms offer enhanced light localization but are limited by 1D geometry.
  • Conventional structures restrict light field manipulation capabilities.

Purpose of the Study:

  • To introduce a synthetic-dimensions-engineered fiber-optic TPP (S-FOTPP) sensing metatip.
  • To enable flexible control over TPP resonance and sensing characteristics in a 2D parameter space.
  • To overcome limitations of conventional structural optimization.

Main Methods:

  • Engineered a synthetic-dimensions TPP structure within a fiber-optic metatip.
  • Exploited the phase-sensitive regime by tuning TPP resonance near twice the Bragg wavelength.
  • Leveraged photocatalytic effects to optimize reaction kinetics for H2 sensing.
  • Analyzed thermal and nonthermal effects in photocatalysis by varying Pd thickness and pump laser power.

Main Results:

  • Achieved significantly enhanced H2 sensing sensitivity compared to conventional TPP and FP structures, with a limit of detection (LOD) in the ppm level.
  • Optimized response and recovery times to 7.7 s and 8.8 s, respectively, using photocatalysis.
  • Demonstrated efficient conversion of hydrogenation-induced phase perturbations into measurable wavelength shifts.

Conclusions:

  • The S-FOTPP metatip integrates high sensitivity, rapid response, and scalable fabrication.
  • Synthetic-dimensions engineering offers a powerful approach for advanced photonic device design.
  • Photocatalysis shows significant potential for improving photonic device performance, particularly in sensing applications.