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Phase-sensitive Bloch surface wave sensor based on variable angle spectroscopic ellipsometry
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DOI：10.1364/OE.22.021403.png)
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摘要
En 中文
In this paper, we propose a phase-sensitive Bloch surface wave sensor based on the variable angle spectroscopic ellipsometry and numerically simulate the phase behavior of the sensor. The simulation results show that the dependence of resonant phase is step-like when BSWs are excited. In contrast to the reflectance behavior, even though losses of the dielectric layers are very small, the resonance dip in the reflectivity will be shallow while the step-like change of the reflection phase of the BSW still be remarkable. This means that phase detection is an alternative to reflectivity intensity detection for the sensing applications of the BSWs in this case. Our experimental results indicate that phase detection for the BSW sensors has the potential to achieve the higher sensitivity and the lower limit of detection. (C) 2014 Optical Society of America
Keyword:
PLASMON RESONANCE INTERFEROMETRY
ELECTROMAGNETIC-WAVES
DIFFERENTIAL PHASE
ARRAYS
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期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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