31 October 2012 Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Wen-Kai Kuo, Chih-Hao Chang, Chien-Jang Wu, 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 . Submission:
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