Journal
OPTICS EXPRESS
Volume 28, Issue 3, Pages 3442-3450Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.382242
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Funding
- National Natural Science Foundation of China [61527827, 61775148]
- National Basic Research Program of China (973 Program) [2017YFB0403804]
- Guangdong Science and Technology Department [2017B020210006, 2018A030310544]
- Shenzhen Science and Technology Innovation Commission [JCYJ20180228162956597, JCYJ20180305124754860]
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A phase surface plasmon resonance (SPR) sensing technology based on white light polarized interference in common-path geometry is reported. A halogen lamp is used as the excitation source of the SPR sensor. The fixed optical path difference (OPD) between p- and s-polarized light is introduced by a birefringence crystal to produce sinusoidal spectral interference fringes. The SPR phase is accurately extracted from the interference fringes using a novel iterative parameter-scanning cross-correlation algorithm. The dynamic detection range is expanded by tracking the best SPR wavelength, which is identified using a window Fourier algorithm. The experimental results show that the sensitivity of this SPR system was 1.3 x 10(-7) MU, and the dynamic detection range was 0.029 RIU. This sensor, not only simple to implement and cost efficient, requires no modulators. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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