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Friday, May 18, 2012
4:00 PM - 5:00 PM
Spalding Laboratory 106 (Hartley Memorial Seminar Room)

Applied Physics Seminar

Metal-filled Photonic Crystal Fibers: Plasmonics and Polarizers
Patrick Uebel, Max Planck Institute for the Science of Light, Erlangen,
Speaker's Bio:
Patrick Uebel was born on May 20th, 1984 in Nuremberg. He started studying Physics in 2004 at the University of Erlangen-Nuremberg where he received his Diploma in 2009. He did his thesis at the Max Planck Institute for the Science of Light in the group of Prof. Philip Russell on Excitation of long-range spiralling surface plasmon polaritons. During his studies he received a scholarship to spend half a year at the University of York, UK. He continued to work in Prof. Russell’s group as a PhD student. His current research interest are plasmonic and bulk optical properties of metals integrated in optical fibers.
When the air holes of Photonic Crystal Fibers (PCF) are filled with metals, the optical properties of the waveguide change very strongly. The hybrid structures show pronounced plasmonic resonances while the bulk optical properties of the metal lead to in-fiber polarization effects.

In this talk I give a short introduction to fiber optics, including modal propagation in step-index-fibers, PCF and plasmonic nanowire waveguides. I discuss the fabrication of metal-filled optical fibers and review the basic theory of surface plasmon polaritons coupled to dielectric waveguides. I present our most recent experimental results, including

Generation of octave-spanning, azimuthal polarized supercontinuum (P. Uebel et al. New J. Phys. 2011 (13), 063016, video abstract online) Polarization-resolved near-field mapping using SNOM of a coupled plasmonic waveguide array (P. Uebel et al. CLEO US 2012, CF2M.2) Gold nanotips as plasmonic hot spot generators Plasmonic hybridization of nanowire waveguides (H. Lee et al. Opt. Lett. 2012, submitted)

In particular, I will focus on the SNOM experiment which was done using a customized device from WITec ALPHA300 S.

For more information, please contact Christy Jenstad by phone at 8124 or by email at [email protected].