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Phase interrogation of an integrated optical SPR sensor

Sheridan, Anna K., Harris, Richard, Bartlett, Philip N. and Wilkinson, James S. (2004) Phase interrogation of an integrated optical SPR sensor Sensors and Actuators B: Chemical, 97, (1), pp. 114-121. (doi:10.1016/j.snb.2003.08.005).

Record type: Article

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.

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Published date: 2004

Identifiers

Local EPrints ID: 13953
URI: http://eprints.soton.ac.uk/id/eprint/13953
ISSN: 0925-4005
PURE UUID: 220ca18c-5d1a-4fea-8a9f-3bc7ab646b04
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 12 Jan 2005
Last modified: 17 Jul 2017 16:59

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Contributors

Author: Anna K. Sheridan
Author: Richard Harris

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