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26 July 2011 Fabrication and characterization of special microstructured fibers
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Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 80011H (2011)
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal
Microstructured optical fibers (MOFs) as a novel type of light guiding media typically combine structural elements with very different chemical and optical behavior, e.g. silica - air, silica - high refractive index glasses. The applicative potential is very manifold: devices for telecommunication, nonlinear optics, sensing devices, fiber based gas lasers, etc. We report about preparation and characterization of selected total internal reflection (TIR) guiding MOFs: Air Clad Fiber, Suspended Core Fiber and heavy metal oxide (HMO) glass core MOFs. We fabricated Air Clad Fibers with extreme air fraction. The bridge width of about 0.13 μm corresponds to a numerical aperture (NA) of about 0.6. Suspended core fibers for evanescent sensing were prepared by pressurized drawing of arrangements of three and four capillaries. By inflating the cavities the NA was increased up to 0.68. Material combined MOFs were prepared for nonlinear application (e.g. supercontinuum generation) with lanthanum aluminum silicate glass core. Thermochemical and optical behaviors of high nonlinear core glass candidates were investigated for alumina concentration up to 20 mol% and lanthanum oxide concentration up to 24 mol% in silica matrix. The manufactured HMO glass core MOF with a La2O3 concentration of 10 mol% shows a similar background loss level like the unstructured HMO glass fiber about 1 dB/m.
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J. Kobelke, K. Schuster, A. Schwuchow, D. Litzkendorf, R. Spittel, J. Kirchhof, and H. Bartelt "Fabrication and characterization of special microstructured fibers", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80011H (26 July 2011);

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