Title :
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
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;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2488278
