Numerical analysis of gold coating based quasi D-shape dual core PCF SPR sensor

Md Biplob Hossain*, T. V. Mahendiran, Lway Faisal Abdulrazak, Ibrahim Mustafa Mehedi, Md Amzad Hossain, Md Masud Rana

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

In this article, a Quasi D-Shape dual core Photonic Crystal Fiber Surface Plasmon Resonance sensor is offered and numerically analyzed. The offered model is established comprising of circular air holes having an external sensing polishing layer coated with gold (Au) in order to ensure simple and straightforward design. The performance parameters are examined by means of modal analysis incorporated finite element method utilizing COMSOL multiphysics software. The sensor performance is analyzed with modifying the geometrical parameters like metal (Au) layer and pitch. It is observed; this model shows maximum amplitude sensitivity of 230 RIU−1 and wavelength sensitivity of 15,000 nm-RIU−1 incorporating amplitude interrogation method and wavelength interrogation method, respectively. The Figure of Merit is similarly considered and measured to 45 per RIU inbetween the refractive index ranging 1.42 RIU to 1.46 RIU. As a final point, a comparison has been given among the work explained in this paper with existing works.

Original languageEnglish
Article number446
JournalOptical and Quantum Electronics
Volume52
Issue number10
DOIs
Publication statusPublished - 1 Oct 2020
Externally publishedYes

Keywords

  • Dual core
  • PCF
  • Quasi D
  • Sensitivity
  • SPR

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