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Optical Engineering • Open Access

Index-guiding liquid-core photonic crystal fiber for solution measurement using normal and surface-enhanced Raman scattering
Author(s): Yun Han; Maung K. Khaing Oo; Yinian Zhu; Limin Xiao; M. Suleyman Demohan; Wei Jin; Henry H. Du

Paper Abstract

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 1 vol% ethanol in water. Sensitive and reproducible SERS detection of 1.7×10-7 M thiocyanate anions (≈14 ppb of NaSCN) in water has also been achieved.

Paper Details

Date Published: 1 April 2008
PDF: 3 pages
Opt. Eng. 47(4) 040502 doi: 10.1117/1.2902463
Published in: Optical Engineering Volume 47, Issue 4
Show Author Affiliations
Yun Han, Stevens Institute of Technology (United States)
Maung K. Khaing Oo, Stevens Institute of Technology (United States)
Yinian Zhu, Stevens Institute of Technology (United States)
Limin Xiao, The Hong Kong Polytechnic Univ. (Hong Kong China)
M. Suleyman Demohan, The Hong Kong Polytechnic Univ. (Hong Kong China)
Wei Jin, The Hong Kong Polytechnic Univ. (Hong Kong China)
Henry H. Du, Stevens Institute of Technology (United States)


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