A High Sensitivity Surface Plasmon Resonance D-Shaped Fiber Sensor Based on a Waveguide-Coupled Bimetallic Structure: Modeling and Optimization

Author

Rezaei, Nasrin ; Yahaghi, Alireza

Author_Institution

Sch. of Electr. & Comput. Eng., Shiraz Univ., Shiraz, Iran

Volume

14

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

3611

Lastpage

3615

Abstract

A D-shaped optical fiber surface plasmon resonance sensor based on waveguide coupled mode using a bimetallic structure is proposed. Finite difference time domain method is used to examine the proposed structure and to improve its sensitivity. Maximum sensitivity of about 6140.2 nm/RIU is achieved. The sensor has some advantages, including high speed and sensitivity, easy construction, easy connection to other devices due to high numerical aperture optical fiber, small size, and in vivo test capability.

Keywords

fibre optic sensors; finite difference time-domain analysis; optical waveguides; surface plasmon resonance; finite difference time domain method; high sensitivity surface plasmon resonance D-shaped fiber sensor; modeling; optimization; sensitivity; waveguide-coupled bimetallic structure; Gold; Indexes; Optical sensors; Plasmons; Sensitivity; Signal to noise ratio; D-shape; detection accuracy; finite difference time domain; sensitivity; surface plasmon resonance;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2014.2329896

Filename

6828748