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), 114-121. (doi:10.1016/j.snb.2003.08.005).

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Description/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
ISSNs: 0925-4005 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 13953
Date Deposited: 12 Jan 2005
Last Modified: 27 Mar 2014 18:04
URI: http://eprints.soton.ac.uk/id/eprint/13953

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