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Proceedings Paper

Phase detection sensitivity enhancement of grating-coupled surface plasmon resonance (SPR) sensor using non-zero azimuth angle incident light
Author(s): Wen-Kai Kuo; Chih-Hao Chang; Chien-Jang Wu
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Paper Abstract

This study numerically and experimentally demonstrates the enhancement of phase detection sensitivity of a gratingcoupled surface plasmon resonance (GCSPR) sensor by using incident light at a nonzero azimuth angle. Phase detection measurements were performed using an electro-optic heterodyne interferometer. The experimental results show that when the GCSPR sensor was rotated azimuthally by 0° and 58°, the phase detection sensitivities were approximately 3.2x10-7 RIU and 5.5x10-8 RIU, respectively. The nonzero azimuth angle was found to enhance the sensor sensitivity by a factor of 5.87 relative to the zero azimuth angle

Paper Details

Date Published: 9 October 2012
PDF: 6 pages
Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 845730 (9 October 2012); doi: 10.1117/12.927748
Show Author Affiliations
Wen-Kai Kuo, National Formosa Univ. (Taiwan)
Chih-Hao Chang, National Formosa Univ. (Taiwan)
Chien-Jang Wu, National Taiwan Normal Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8457:
Plasmonics: Metallic Nanostructures and Their Optical Properties X
Mark I. Stockman, Editor(s)

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