Index-guiding liquid-core photonic crystal fiber for solution measurement using normal and surface-enhanced Raman scattering

Yun Han, Maung Kyaw Khaing Oo, Yinian Zhu, Limin Xiao, M. Suleyman Demohan, Wei Jin, Henry Du

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


We have explored the use of index-guiding liquid-core (LC) photonic crystal fiber (PCF) as a robust platform for measurements of solutions of trace volume using normal and surface-enhanced Raman scattering (SERS). The LC PCF was fabricated by selectively sealing the cladding air channels at the distal ends of a hollow-core PCF while leaving the center core open, using a fusion splicer. Utilizing a 30-cm-long LC PCF with the entire center core filled with the ∼0.1-μL solution of interest, we have obtained normal Raman spectra of water, ethanol, and 1vol% ethanol in water. Sensitive and reproducible SERS detection of 1.7×10-7M thiocyanate anions (≈14ppb of NaSCN) in water has also been achieved.
Original languageEnglish
Article number040502
JournalOptical Engineering
Issue number4
Publication statusPublished - 1 Dec 2008


  • detection
  • hollow-core photonic crystal fiber
  • index-guiding liquid-core photonic crystal fiber
  • Raman scattering
  • sensing
  • surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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