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19 May 2009 Microstrutured fibers with germanium doped core components
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The paper reports preparation and applicative aspects of two types of index guiding microstructured fibers (MOFs) with germanium doped cores. The first fiber type has a solid core with graded germanium profile. It shows a high photosensitivity compared to pure silica MOFs. We inscribed high-quality Bragg gratings with a reflectivity of 73% without hydrogen loading. The solid core germanium doped MOF was spliced with standard silica fiber. The minimum splice loss was about 1 dB at 1550 μm wavelength. A more complex MOF type was prepared with germanium doped holey core in a silica holey cladding. The germanium doped core area includes seven holes in hexagonal arrangement with equal diameter and pitch sizes. The holey core propagates a large area annulus mode. We show the suitability of this MOF for chemical gas sensing by filling the core cavities with hydrocarbon analytes.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Kobelke, K. Schuster, A. Schwuchow, Y. Wang, S. Brückner, M. Becker, M. Rothhardt, J. Kirchhof, W. Ecke, R. Willsch, and H. Bartelt "Microstrutured fibers with germanium doped core components", Proc. SPIE 7357, Photonic Crystal Fibers III, 735704 (19 May 2009);


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