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Waveguide surface plasmon resonance sensors

Waveguide surface plasmon resonance sensors
Waveguide surface plasmon resonance sensors
Guided-wave optical biosensors have great potential for use in the field of environmental monitoring. In particular, planar waveguide technologies offer the possibility of producing compact, monolithic, multisensor devices which may be connected to instrumentation using optical fibres, allowing remote operation. Optical evanescent field sensing techniques presently under investigation include grating couplers, waveguide interferometers and surface plasmon resonance (SPR) sensors. In the latter case, the surface plasmon is generally excited using a "bulk" optical component such as a prism, and equipment using this technique is now commercially available. One potential advantage of the SPR technique is that the metal film which supports the surface plasmon may also be used as an electrode for electrochemical control of sensing reactions. However, recent reports have indicated that the "bulk" SPR devices may not ultimately be as sensitive as fully guided-wave approaches such as the Mach-Zehnder interferometer. An alternative to the "bulk" SPR devices which has recently emerged is the use of distributed coupling between a dielectric waveguide and the surface plasmon mode in a metal-coated waveguide. This has the advantage of combining greater design flexibility and the potential for monolithic integration with the well-established technique of SPR. However, at present no adequate model for the performance of these devices exists. ...
Harris, R.D.
e972b676-3335-44cd-b6e8-0dae17c550c3
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Harris, R.D.
e972b676-3335-44cd-b6e8-0dae17c550c3
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca

Harris, R.D. and Wilkinson, James S. (1994) Waveguide surface plasmon resonance sensors. Europt(r)ode II, Florence, Italy. 19 - 21 Apr 1994.

Record type: Conference or Workshop Item (Paper)

Abstract

Guided-wave optical biosensors have great potential for use in the field of environmental monitoring. In particular, planar waveguide technologies offer the possibility of producing compact, monolithic, multisensor devices which may be connected to instrumentation using optical fibres, allowing remote operation. Optical evanescent field sensing techniques presently under investigation include grating couplers, waveguide interferometers and surface plasmon resonance (SPR) sensors. In the latter case, the surface plasmon is generally excited using a "bulk" optical component such as a prism, and equipment using this technique is now commercially available. One potential advantage of the SPR technique is that the metal film which supports the surface plasmon may also be used as an electrode for electrochemical control of sensing reactions. However, recent reports have indicated that the "bulk" SPR devices may not ultimately be as sensitive as fully guided-wave approaches such as the Mach-Zehnder interferometer. An alternative to the "bulk" SPR devices which has recently emerged is the use of distributed coupling between a dielectric waveguide and the surface plasmon mode in a metal-coated waveguide. This has the advantage of combining greater design flexibility and the potential for monolithic integration with the well-established technique of SPR. However, at present no adequate model for the performance of these devices exists. ...

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Published date: 1994
Venue - Dates: Europt(r)ode II, Florence, Italy, 1994-04-19 - 1994-04-21
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 267901
URI: http://eprints.soton.ac.uk/id/eprint/267901
PURE UUID: 90c1da5b-541e-4fd7-8c8f-383a3674f3f5
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

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Date deposited: 17 Sep 2009 15:01
Last modified: 15 Mar 2024 02:33

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Contributors

Author: R.D. Harris

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