A biconical taper multi-mode fiber SERS sensor

被引：0

作者：

Bai, Hua ^{[1
]}

Chen, Zhenyi ^{[1
]}

Chen, Na ^{[1
]}

Guo, Qiang ^{[1
]}

Zhang, Kun ^{[1
]}

Pang, Fufei ^{[1
]}

Wang, Tingyun ^{[1
]}

机构：

[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China

来源：

OPTICAL SENSORS AND BIOPHOTONICS II | 2011年 / 7990卷

关键词：

optical fiber; sensor; biconical taper fiber; Raman spectrum; surface-enhanced Raman scattering (SERS); SURFACE-ENHANCED-RAMAN; SILVER ELECTRODE; SPECTROSCOPY;

D O I：

10.1117/12.888564

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A surface-enhanced Raman scattering (SERS) optical fiber sensor using biconical taper multi-mode fiber (MMF) is proposed. It is fabricated by fused elongating a multi-mode fiber and then coated the silver colloid on its waist. The main advantage of this sensor is that it can increase the SERS active substrate region to make more molecules be excited to produce Raman signal. Silver colloid is selected as the active substrate of SERS. A modified immobilizing process is introduced to increase the thickness of the immobilized layer and reduce the preparation time. Various concentration of R6G is used to detect the performance of the sensor. Strong Raman signal is detected from the waist of the tapered fiber. The detection sensitivity is up to 10(-9)M.

引用

页数：6

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