Phase detection sensitivity enhancement of grating-coupled surface plasmon resonance (SPR) sensor using non-zero azimuth angle incident light

Wen-Kai Kuo; Chih-Hao Chang; Chien-Jang Wu

doi:10.1117/12.927748

9 October 2012 Phase detection sensitivity enhancement of grating-coupled surface plasmon resonance (SPR) sensor using non-zero azimuth angle incident light

Wen-Kai Kuo, Chih-Hao Chang, Chien-Jang Wu

Author Affiliations +

Proceedings Volume 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X; 845730 (2012) https://doi.org/10.1117/12.927748
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

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

Citation Download Citation

Wen-Kai Kuo, Chih-Hao Chang, and Chien-Jang Wu "Phase detection sensitivity enhancement of grating-coupled surface plasmon resonance (SPR) sensor using non-zero azimuth angle incident light", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 845730 (9 October 2012); https://doi.org/10.1117/12.927748

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