A Surface Plasmon Biosensor Based on a D-Shaped Microstructured Optical Fiber With Rectangular Lattice

Author

Lu Peng ; Fukun Shi ; Guiyao Zhou ; Shu Ge ; Zhiyun Hou ; Changming Xia

Author_Institution

Guangdong Province Key Lab. of Nanophotonic Functional Mater. & Devices, South China Normal Univ., Guangzhou, China

Volume

7

Issue

5

fYear

2015

Firstpage

1

Lastpage

9

Abstract

A numerical investigation of a surface plasmon biosensor based on D-shaped microstructured optical fiber (MOF) with rectangular lattice is presented. A full-vector finite-element method is applied to analyze the resonance coupling properties. By adjusting the diameters of two large air holes, the proposed biosensor shows excellent performance. High sensitivity and narrow full-width at half-maximum (FWHM) can be achieved. In particular, the figure of merit can reach to 478.3RIU^-1, which is to our knowledge the highest among the reported MOF sensors. In the last part, the influence of coating thickness on the sensing performance has been considered.

Keywords

biosensors; fibre optic sensors; finite element analysis; micro-optics; surface plasmons; D-shaped microstructured optical fiber; FWHM; MOF; air holes; coating thickness; full-vector finite-element method; full-width at half-maximum; rectangular lattice; resonance coupling; surface plasmon biosensor; Biosensors; Couplings; Lattices; Optical fiber sensors; Optical fibers; Plasmons; Surface plasmon; fiber optics sensors; microstructured optical fibers;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2488278

Filename

7300376