Surface Plasmon Resonance Photonic Crystal Fiber Biosensor: A Practical Sensing Approach

A. A. Rifat, Ghafour Amouzad Mahdiraji, Y. M. Sua, Y. G. Shee, Rajib Ahmed, Desmond M. Chow, F. R.Mahamd Adikan

Research output: Contribution to journalArticlepeer-review

194 Scopus citations

Abstract

We propose a simple, two rings, hexagonal lattice photonic crystal fiber biosensor using surface plasmon resonance phenomenon. An active plasmonic gold layer and the analyte (sample) are placed outside the fiber structure instead of inside the air-holes, which will result in a simpler and straight forward fabrication process. The proposed sensor exhibits birefringent behavior that enhances its sensitivity. Numerical investigation of the guiding properties and sensing performance are conducted by finite element method. Using wavelength and amplitude interrogation methods, the proposed sensor could provide maximum sensitivity of 4000 nm/RIU and 320 RIU-1 , respectively. The resolutions of the sensor are 2.5 × 10-5 and 3.125 × 10-5 RIU for wavelength and amplitude interrogation modes. The proposed sensor design shows promising results that could be used in biological and biochemical analytes detection.

Original languageEnglish
Article number7106454
Pages (from-to)1628-1631
Number of pages4
JournalIEEE Photonics Technology Letters
Volume27
Issue number15
DOIs
StatePublished - 1 Aug 2015

Keywords

  • Biosensors
  • Gold
  • Optical fiber sensors
  • Optical surface waves
  • Photonic crystal fibers
  • Plasmons

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