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 58deg was found to enhance the sensor sensitivity by a factor of 5.87 relative to the azimuth angle of 0 deg.
Original language | English |
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Article number | 063524 |
Journal | Journal of Nanophotonics |
Volume | 6 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- azimuth angle
- grating-coupled surface plasmon resonance
- heterodyne interferometer
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics