Title

Integrated Optical Spr Sensor Based On Mode Conversion Efficiency

Abstract

A novel type of integrated optical surface plasmon resonance (SPR) sensor is proposed, for which the operational principle is based on the launching efficiency of eigenmodes in the sensor head. The sensor comprises an inverted-rib-type dielectric waveguide, a portion of which is covered with a thin gold layer. Eigenmodes in the sensor head are coupled modes of a surface plasmon polariton and a dielectric guided wave. The excitation efficiency of the coupled modes varies significantly depending on the refractive index of the analyte medium on the sensor head. Following this principle, the transmission coefficient of light through the sensor head can be used as a sensitive measure of the variation in the refractive index of the analyte medium. © 2008 The Institution of Engineering and Technology.

Publication Date

8-15-2008

Publication Title

Electronics Letters

Volume

44

Issue

16

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1049/el:20081684

Socpus ID

49149103650 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/49149103650

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