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Journal of Nanophotonics

Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle
Author(s): Wen-Kai Kuo; Chih-Hao Chang; Chien-Jang Wu; Hsin Her Yu
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Paper Abstract

We have numerically and experimentally demonstrated the enhancement of phase detection sensitivity of a grating-coupled 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. When the GCSPR sensor was rotated azimuthally by 0 deg and 58 deg, the phase detection sensitivities were approximately 3.2×10−7  RIU and 5.5×10−8  RIU, respectively. The azimuth angle of 58 deg was found to enhance the sensor sensitivity by a factor of 5.87 relative to the azimuth angle of 0 deg.

Paper Details

Date Published: 31 October 2012
PDF: 7 pages
J. Nanophoton. 6(1) 063524 doi: 10.1117/1.JNP.6.063524
Published in: Journal of Nanophotonics Volume 6, Issue 1
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)
Hsin Her Yu, National Formosa Univ. (Taiwan)

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