Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle

Wen-Kai Kuo; Chih-Hao Chang; Chien-Jang Wu; Hsin Her Yu

doi:10.1117/1.JNP.6.063524

31 October 2012 Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle

Wen-Kai Kuo, Chih-Hao Chang, Chien-Jang Wu, Hsin Her Yu

Author Affiliations +

Funded by: National Science Council, Taiwan, R.O.C.

Journal of Nanophotonics, Vol. 6, Issue 1, 063524 (October 2012). https://doi.org/10.1117/1.JNP.6.063524

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.

Citation Download Citation

Wen-Kai Kuo, Chih-Hao Chang, Chien-Jang Wu, and Hsin Her Yu "Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle," Journal of Nanophotonics 6(1), 063524 (31 October 2012). https://doi.org/10.1117/1.JNP.6.063524

Published: 31 October 2012

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