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Related Experiment Video

Updated: May 9, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

High resolution grating-assisted surface plasmon resonance fiber optic aptasensor.

Jacques Albert1, Sandrine Lepinay, Christophe Caucheteur

  • 1Department of Electronics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S5B5, Canada.

Methods (San Diego, Calif.)
|July 23, 2013
PubMed
Summary

This study demonstrates a novel surface plasmon resonance (SPR) biosensor using a tilted fiber Bragg grating. This high-accuracy sensor effectively detects biomolecules like proteins for advanced biochemical sensing applications.

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Area of Science:

  • Photonics and Biosensing
  • Optical Fiber Sensors
  • Biochemical Detection

Background:

  • Surface plasmon resonance (SPR) is a label-free optical technique widely used for detecting molecular interactions.
  • Fiber optic sensors offer advantages such as miniaturization, remote sensing, and immunity to electromagnetic interference.
  • Tilted fiber Bragg gratings (TFBGs) provide a versatile platform for developing advanced optical sensing devices.

Purpose of the Study:

  • To demonstrate a novel SPR biochemical sensor.
  • To utilize a tilted fiber Bragg grating (TFBG) for enhanced SPR sensing.
  • To achieve high-accuracy detection of biomolecules using near-infrared wavelengths.

Main Methods:

  • Fabrication of a TFBG in a single-mode fiber core.
Keywords:
AptamerBiochemical sensorFiber gratingFiber sensorSurface plasmon resonance

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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

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Last Updated: May 9, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

  • Coating the fiber cladding with a thin gold layer (30-50 nm) to support surface plasmon waves.
  • Monitoring the interaction of surface plasmon waves with attached biomolecules via the fiber's transmission spectrum near 1,550 nm.
  • Functionalizing gold surfaces with aptamers for specific protein detection.

    • Main Results:

    • The sensor exhibits a fine comb of narrowband resonances overlapping with surface plasmon absorption.
    • This spectral overlap enables highly accurate measurement of small plasmon shifts.
    • The aptamer-functionalized gold surface demonstrated functionality for target-analyte detection.
    • The sensor's performance was validated for protein detection.

    Conclusions:

    • A highly sensitive SPR biosensor based on TFBG technology has been successfully demonstrated.
    • The sensor offers high accuracy in detecting biomolecular interactions.
    • The device is suitable for stand-alone use or integration into multi-sensor platforms for diverse biochemical sensing applications.