Multi-channel SPR biosensor based on PCF for multi-analyte sensing applications

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This paper presents a theoretical investigation of a novel holey fiber (Photonic Crystal Fiber (PCF)) multi-channel biosensor based on surface plasmon resonance (SPR). The large gold coated micro fluidic channels and elliptical air hole design of our proposed biosensor aided by a high refractive index over layer in two channels enables operation in two modes; multi analyte sensing and self-referencing mode. Loss spectra, dispersion and detection capability of our proposed biosensor for the two fundamental modes (HE11(x) and y11 HE11(y) ) have been elucidated using a Finite Element Method (FEM) and Perfectly Matching Layers (PML).
Original languageEnglish
Pages (from-to)15716-15727
Number of pages12
JournalOptics Express
Issue number12
Publication statusPublished - 5 Jun 2015


  • sensors
  • Surface plasmons;
  • Fibre optic sensors
  • Integrated optics devices.

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