Title :
Research on optical fiber sensor based on nanoparticles-modified
Author :
Yanling, Yuan ; Chenyang, Xue ; Huijuan, Wang ; Qiang, Zhang
Author_Institution :
Key Lab. of Instrum. Sci. & Dynamic Meas. of Minist. of Educ., North Univ. of China, Taiyuan, China
Abstract :
This article makes a study on optical fiber sensor with metal nanostructure based on the properties of optical fiber sensing technology and the optical performances of metal nanoparticles. Moreover, star-sha ped gold nanoparticles which mean diameter is from 60 to 80 nm were obtained by the Seed-mediated growth method. Then these nanoparticles were used as the sensitive part of the optical fiber sensor and were modified to the tapered fiber surface as a surface Raman enhanced substrate. Finally, transmission spectrum and Raman spectra were carried out in different concentration alcohol solution. The experiments show that the extinction spectra of gold nanoparticles is very sensitive to the dielectric properties of the surrounding medium and the nanoparticles fiber-taper-excited SERS (Surface-enhanced Raman scattering) substrates exhibit a significant enhancement of the Raman spectra.
Keywords :
extinction coefficients; fibre optic sensors; gold; integrated optics; light transmission; nanoparticles; nanophotonics; surface enhanced Raman scattering; Raman spectra; alcohol solution; dielectric properties; extinction spectra; fiber-taper-excited SERS; metal nanostructure; optical fiber sensor; seed-mediated growth method; size 60 nm to 80 nm; star-shaped gold nanoparticles; surface Raman enhanced substrate; surface-enhanced Raman scattering; transmission spectrum; Biomedical optical imaging; Nanobioscience; Optical fiber sensors; Optical fibers; Optical imaging; Fiber; Nano-modified; Optical Sensor; Star-shaped gold nanoparticles; Transmission;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013244
