Title :
A highly sensitive photonic crystal fibre (PCF) surface plasmon resonance (SPR) sensor based on a bimetallic structure of gold and silver
Author :
Akowuah, E.K. ; Gorman, T. ; Ademgil, H. ; Haxha, S.
Author_Institution :
Dept. of Comput. Eng., Kwame Nkrumah Univ. of Sci. & Technol., Kumasi, Ghana
Abstract :
This paper presents a theoretical study of a highly sensitive photonic crystal fibre (PCF) surface plasmon resonance (SPR) sensor. The proposed sensor consists of a gold-silver bimetallic structure as a transducing layer in the micro-fluidic slots which ensures optimum spectral sensitivity, low losses and narrow spectral width. The loss spectra and sensitivity of the proposed biosensor have been presented using a full-vector finite element method (FEM) with perfectly matched layers (PML). Typical sensor sensitivity of 3200 nm/RIU with has been demonstrated.
Keywords :
bimetals; biosensors; fibre optic sensors; finite element analysis; gold; holey fibres; microfluidics; microsensors; optical fibre losses; optical fibre theory; photonic crystals; refractive index; silver; surface plasmon resonance; transducers; FEM; PCF surface; PML; RIU; SPR sensor; finite element method; gold-silver bimetallic structure; loss spectra; microfluidic slot; perfectly matched layer; photonic crystal fibre; spectral sensitivity; surface plasmon resonance; transducing layer; Conferences; Decision support systems; fibre optic sensors; photonic crystal fibres; sensors; waveguide sensors;
Conference_Titel :
Adaptive Science & Technology (ICAST), 2012 IEEE 4th International Conference on
Conference_Location :
Kumasi
Print_ISBN :
978-1-4673-4787-7
DOI :
10.1109/ICASTech.2012.6381078
