Applied Physics A

, Volume 104, Issue 3, pp 765–768

Experimental comparison between intensity and phase detection sensitivities of grating coupling surface plasmon resonance

Article

Abstract

This paper experimentally compares the intensity and phase detection sensitivities of grating coupling surface plasmon resonance (SPR). A simple air-heating method is proposed to implement tiny refractive index changes. An electro-optic heterodyne interferometer is used to obtain both the intensity and phase curves of the grating coupling SPR device. The transient reflectivity and phase curves during the heating process are recorded. The result shows that the phase detection sensitivity is much better than that of the intensity by an order of magnitude.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Department of Electro-Optics EngineeringNational Formosa UniversityHuweiTaiwan, ROC

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