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Authors: P.P.P. Debackere, S. Scheerlinck, P. Bienstman, R. Baets
Title: Surface Plasmon Interferometer in Silicon-on-Insulator: Novel Concept for an Integrated Biosensor
Format: International Conference Presentation
Publication date: 9/2006
Journal/Conference/Book: Group IV Photonics
Volume(Issue): p.7-10
Location: Ottawa, Canada
DOI: 10.1109/group4.2006.1708147
Citations: 3 (Dimensions.ai - last update: 8/12/2024)
1 (OpenCitations - last update: 3/5/2024)
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Abstract

We propose a novel configuration for a highly integrated and highly sensitive optical biosensor. The basic element of our sensor is a surface plasmon interferometer consisting of a thin layer of gold embedded in a silicon membrane. We investigate the performance of our sensor by simulation using eigenmode expansion. We calculate that refractive index changes in the order of 0.000001 RIU (refractive index unit) are detectable for a component of length 10 micrometer. Moreover, we illustrate that the operation wavelength of our sensor can be tuned to a desired wavelength for a wide range of environmental refractive indices, making our device suitable for chemo- and biosensing.

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