首页|Surface-enhanced Raman scattering sensor based on fused biconical taper zone of optical fiber

Surface-enhanced Raman scattering sensor based on fused biconical taper zone of optical fiber

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In this paper, a novel surface-enhanced Raman scattering (SERS) sensor combined with fused biconical taper fiber (FBTF) and film coated with silver sols is proposed. This structure is designed to significantly increase the SERS active surface when the length of the taper is increased and the radius is reduced, since the penetration depth is inversely proportional to the taper radius and proportional to the taper length according to the fiber-optic evanescent-wave theory. Based on the SERS sensing principle, the feasibility of FBTF sensor is analyzed in this paper. As a result, the Raman spectrum of R6G is obtained from the fused biconical taper zone surface coating with the silver sols in our experiments. The detected concentration is up to 10-7 mol/L.

surface-enhanced Raman scattering (SERS)fused biconical taper fiber (FBTF)evanescent wavepenetration depthSERS-active surface

CHEN Zhen-yi、BAI Hua、ZHANG Kun、CHEN Na、PANG Fu-fei、WANG Ting-yun

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Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200072, P. R. China

国家自然科学基金国家自然科学基金国家自然科学基金Shanghai Leading Academic Discipline ProjectScience and Technology Commission of Shanghai Municipality

6102701560677031609370033010810DZ2210900

2011

10.1007/s11741-011-0685-2

上海大学学报(英文版)
上海大学

上海大学学报(英文版)

影响因子：0.196
ISSN：1007-6417
年,卷(期)：2011.15(1)
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