Number of the records: 1  

Advantage of multi-mode sapphire optical fiber for evanescent-field SERS sensing

  1. 1.
    SYSNO ASEP0436258
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleAdvantage of multi-mode sapphire optical fiber for evanescent-field SERS sensing
    Author(s) Chen, H. (US)
    Tian, F. (US)
    Chi, J. (US)
    Kaňka, Jiří (URE-Y)
    Du, H. (US)
    Number of authors5
    Source TitleOptics Letters. - : Optical Society of America - ISSN 0146-9592
    Roč. 39, č. 20 (2014), 5822-5825
    Number of pages4 s.
    Publication formPrint - P
    Languageeng - English
    CountryUS - United States
    KeywordsFiber optics sensors ; Backscattering ; Nanomaterials
    Subject RIVJA - Electronics ; Optoelectronics, Electrical Engineering
    R&D ProjectsLH11038 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportURE-Y - RVO:67985882
    UT WOS000343912000009
    EID SCOPUS84908102161
    DOI10.1364/OL.39.005822
    AnnotationAn unclad, multi-mode single crystal sapphire fiber was used as a platform, and immobilized colloidal Ag nanoparticles (NPs) were used as enabler, for evanescent-field fiber-optic sensing via surface-enhanced Raman scattering (SERS) of Rhodamine 6G (R6G) solution. The dependence of the measured Raman intensity on NP coverage density (to a maximum of 120 particles/μm2) as well as the coverage length (to a maximum of 6 cm) was investigated. We demonstrate the utility of SERS-active sapphire fibers for sensitive measurements (10-8 M R6G). We further reveal, with the aid of theoretical analysis, that multi-mode fiber offers a significant advantage compared to its single-mode counterpart because the former allows two orders of magnitude higher particle coverage density than the latter to maximize SERS benefit, while maintaining the dominance of Raman gain despite the competitive interplay of NP-induced absorption and scattering loss along the interaction path length
    WorkplaceInstitute of Radio Engineering and Electronics
    ContactPetr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488
    Year of Publishing2015
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.