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首页> 外文会议>International conference on optical engineering for sensing and nanotechnology >Refractive index sensor with a guided-mode resonant grating filter
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Refractive index sensor with a guided-mode resonant grating filter

机译：带有导向模式谐振光栅过滤器的折射率传感器

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摘要

This paper describes a novel refractive index sensor with a guided-mode resonant grating (GMRG) filter. The GMRG filter is a narrowband wavelength reflection filter. The incident light is reflected at a resonance condition of incident angle and wavelength. When the grating filter is covered by a liquid to be tested, the resonant condition depends upon its refractive index. The refractive index of the liquid can be determined from the resonance angle for a known wavelength. Since a full-half width of incident angle for the resonance is very narrow (<0.1°), a high resolution is expected. We designed the GMRG filters for the refractive index sensor. And the resonance angle of incidence was investigated experimentally for the mixture of water and ethyl alcohol.
机译：本文介绍了一种具有引导模式谐振光栅（GMRG）滤光片的新型折射率传感器。 GMRG滤波器是窄带波长反射滤波器。入射光以入射角和波长的共振条件反射。当光栅过滤器被待测液体覆盖时，谐振条件取决于其折射率。液体的折射率可以根据已知波长的共振角确定。由于谐振的全半入射角的宽度非常窄（<0.1°），因此预期高分辨率。我们为折射率传感器设计了GMRG过滤器。实验研究了水和乙醇的混合物实验研究了发病率的共振角。

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