Regensburg 2010 – wissenschaftliches Programm
HL 60.10: Poster
Donnerstag, 25. März 2010, 18:00–20:00, Poster D1
Fiber Coupled Waveguided Metallic Photonic Crystals — •Shengfei Feng1,2, Peter J. Klar2, Achim Kronenberger2, Torsten Henning2, and Xinping Zhang1 — 1College of Applied Sciences, Beijing University of Technology, Beijing 100124, P. R. China — 2Institute of Experimental Physics I, Justus-Liebig-University Giessen, Germany
Fabrication and characterization of waveguided metallic photonic crystals on the facets of multimode fibers are demonstrated. A layer of zinc oxide (ZnO) is used as the waveguide in the device. The ZnO layer is deposited on the facet of the fiber by radio-frequency magnetron sputtering. The one-dimensional gold-grating on top of the ZnO layer is fabricated using electron beam lithography and a lift-off process. This device combines the unique property of waveguide metallic photonic crystal structure with the transmission property of a fiber. When a beam of broadband white light is coupled into the fiber from the non-structured end, a strong and narrow band signal can be obtained in the reflected light, which is transmitted back through the fiber. The wavelength of the reflection peak of the narrow-band reflection is sensitive to the refractive index of the environment. Therefore, this device may be used to detect the refractive index changes of the opaque liquids.