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

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    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 languageEnglish
    Article number063524
    JournalJournal of Nanophotonics
    Volume6
    Issue number1
    DOIs
    Publication statusPublished - 2012

    Keywords

    • azimuth angle
    • grating-coupled surface plasmon resonance
    • heterodyne interferometer

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Fingerprint Dive into the research topics of 'Phase-detection-sensitivity enhancement of grating-coupled surface plasmon resonance sensor with light incident at nonzero azimuth angle'. Together they form a unique fingerprint.

    Cite this