Application of differential phase measurement technique to surface plasmon resonance imaging sensors

Author

Ho, H.P. ; Lam, W.W. ; Wong, P.L. ; Guo, F.

Author_Institution

Dept. of Phys. & Mater. Sci., City Univ. of Hong Kong, Kowloon, China

fYear

2002

fDate

2002

Firstpage

55

Lastpage

58

Abstract

In this paper, a differential phase imaging technique applied to optical surface plasmon resonance (SPR) sensors is presented. The technique makes use of the s-polarisation as the reference beam to interfere with the p-polarisation, of which the phase has a close relationship with the change of SPR conditions at the sensor surface. As a trial experiment, the SPR phase shift between water and air has been measured. Our results suggest a measurement accuracy of 5×10^-2 rad.

Keywords

biosensors; light interference; light polarisation; medical image processing; phase measurement; surface plasmon resonance; 2D biosensor arrays; differential phase measurement techniques; measurement accuracy; optical SPR sensors; p-polarisation interference; s-polarisation reference beam; sensor surface SPR condition change; surface plasmon resonance imaging sensors; water/air SPR phase shift measurement; Absorption; Image sensors; Optical films; Optical imaging; Optical sensors; Optical surface waves; Phase measurement; Plasmons; Polarization; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 2002. Proceedings. 2002 IEEE Hong Kong

Print_ISBN

0-7803-7429-0

Type

conf

DOI

10.1109/HKEDM.2002.1029156

Filename

1029156