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Proceedings Paper

Photonic crystal fiber as an optofluidic platform for surface-enhanced Raman scattering
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Paper Abstract

As both a waveguide and a gas/liquid transmission cell, photonic crystal fiber (PCF) allows synergistic integration of optics and microfluidics to form an unconventional optofluidic platform with long interaction path. In this paper, we report our strategy to achieve surface-enhanced Raman scattering (SERS) PCF optofluidics by polyelectrolyte-mediated immobilization of Ag nanoparticles (NPs) inside the fiber air channels. Through forward propagating Raman measurements and hyperspectral Raman imaging, we demonstrate the realization of SERS-active PCF optofluidics with accumulative Raman signal gain along the entire fiber length using both solid-core PCF (SC PCF) and hollow-core PCF (HC PCF). By numerical simulation and Raman measurements, we show that suspended-core PCF (SP PCF) consisting of a silica core surrounded by three large air channels conjoined by a thin silica web is the most robust platform of the three SC PCF microstructures investigated for evanescent-field SERS spectroscopy.

Paper Details

Date Published: 14 October 2010
PDF: 6 pages
Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 783908 (14 October 2010); doi: 10.1117/12.869331
Show Author Affiliations
Yun Han, Stevens Institute of Technology (United States)
Maung Kyaw Khaing Oo, Stevens Institute of Technology (United States)
Svetlana Sukhishvili, Stevens Institute of Technology (United States)
Henry Du, Stevens Institute of Technology (United States)

Published in SPIE Proceedings Vol. 7839:
2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2)
Juan Hernández-Cordero; Ismael Torres-Gómez; Alexis Méndez, Editor(s)

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