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Phase interrogation of an integrated optical SPR sensor

Sheridan, A.K. and Harris, R.D. and Bartlett, P.N. and Wilkinson, J.S. (2004) Phase interrogation of an integrated optical SPR sensor. Sensors and Actuators B: Chemical, 97 (1). pp. 114-121. ISSN 0925-4005

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Abstract

A theoretical analysis of the phase behaviour of an integrated optical surface plasmon resonance (SPR) sensor is presented, in which the complex transmittance of a dielectric waveguide coated with a thin film of gold is determined for varying superstrate index. Exploitation of the phase sensitivity is studied theoretically by incorporating gold-coated waveguides on both branches of a Mach–Zehnder interferometer (MZI), one or both of which may be exposed to superstrate index variations or thin adlayers. It is proposed that this device can be used to suppress unwanted refractive index changes common to both branches, for example, due to temperature variations, and may show enhanced sensitivity.

Item type: Article
ID code: 38729
Keywords: surface plasmon resonance, sensor, Mach–Zehnder interferometer , integrated optics , Electrical engineering. Electronics Nuclear engineering, Materials Chemistry, Instrumentation, Surfaces, Coatings and Films, Metals and Alloys, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Condensed Matter Physics
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 27 Mar 2012 12:25
    Last modified: 04 Sep 2014 19:36
    URI: http://strathprints.strath.ac.uk/id/eprint/38729

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