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基于表面增强拉曼散射(SERS)的光纤传感器结合了光纤与表面增强拉曼散射效应,具有普通传感器无法比拟的优点。但是,应用普通光纤将带来诸如背景干扰与吸收、光纤自身的荧光效应及拉曼散射等缺点。为解决这一问题,将光子晶体光纤与表面增强拉曼散射效应相结合,称为基于表面增强拉曼散射的光子晶体光纤(PCFs)传感器,具有高灵敏度、抗干扰、结构简单、光路可弯曲及对待测物影响极小等优点。介绍了表面增强拉曼散射效应、光子晶体光纤和基于表面增强拉曼散射的光子晶体光纤传感器的发展现状,主要包括原理、几何结构和在生物传感中的独特应用,总结了此新型传感器的发展趋势,讨论了下一步亟需解决的问题。
Fiber-optic sensors based on surface-enhanced Raman scattering (SERS) combine the fiber-surface-enhanced Raman scattering with the unmatched advantages of conventional sensors. However, the use of ordinary optical fiber brings disadvantages such as background interference and absorption, optical fiber’s own fluorescence effect and Raman scattering. In order to solve this problem, the combination of photonic crystal fiber and surface enhanced Raman scattering effect is called photonic crystal fiber (PCFs) sensor based on surface enhanced Raman scattering with high sensitivity, anti-jamming, simple structure and flexible optical path And treats the thing that the influence of the thing is extremely small and so on. The development status of surface enhanced Raman scattering effect, photonic crystal fiber and photonic crystal fiber sensor based on surface enhanced Raman scattering are introduced, including principle, geometric structure and unique application in biosensor. The new sensor Development trend, discussed the next urgent problem to be solved.