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Related Experiment Videos

Fiber-Bragg-grating-assisted surface plasmon-polariton sensor.

Galina Nemova1, Raman Kashyap

  • 1Department of Engineering Physics, Ecole Polytechnique de Montréal, Canada.

Optics Letters
|June 24, 2006
PubMed
Summary

A novel surface plasmon-polariton (SPP) fiber sensor design uses a fiber Bragg grating for efficient SPP excitation. This theoretical scheme, applicable to both fiber and planar geometries, offers high energy transfer efficiency at telecommunication wavelengths.

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Area of Science:

  • Photonics and Optics
  • Nanotechnology
  • Sensor Technology

Background:

  • Surface plasmon-polaritons (SPPs) are electromagnetic waves confined to the interface between a dielectric and a metal.
  • Exciting SPPs typically requires specific conditions, often involving prism coupling or gratings.
  • Fiber-based sensors offer advantages in remote sensing and integration into existing fiber networks.

Purpose of the Study:

  • To present a novel theoretical scheme for an SPP fiber sensor.
  • To demonstrate efficient SPP excitation within a fiber core using a fiber Bragg grating.
  • To explore the applicability of the proposed scheme to both cylindrical and planar geometries.

Main Methods:

  • Theoretical modeling using the coupled-mode method.

Related Experiment Videos

  • Design of a short-period fiber Bragg grating (SPG) for SPP excitation.
  • Simulations conducted at standard telecommunications wavelengths (e.g., 1550 nm).

    • Main Results:

    • High efficiency of energy transfer from the fiber core mode to SPPs.
    • Demonstration of SPP excitation via a specifically designed fiber Bragg grating.
    • Validation of the scheme's potential for both fiber and planar configurations.

    Conclusions:

    • The proposed theoretical scheme offers a new method for SPP fiber sensor development.
    • Efficient SPP excitation is achievable using fiber Bragg gratings within the fiber core.
    • The presented approach has broad applicability in plasmonic sensing technologies.