19 May 2009 Microstrutured fibers with germanium doped core components
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Abstract
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.
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J. Kobelke, J. Kobelke, K. Schuster, K. Schuster, A. Schwuchow, A. Schwuchow, Y. Wang, Y. Wang, S. Brückner, S. Brückner, M. Becker, M. Becker, M. Rothhardt, M. Rothhardt, J. Kirchhof, J. Kirchhof, W. Ecke, W. Ecke, R. Willsch, R. Willsch, H. Bartelt, H. Bartelt, } "Microstrutured fibers with germanium doped core components", Proc. SPIE 7357, Photonic Crystal Fibers III, 735704 (19 May 2009); doi: 10.1117/12.820614; https://doi.org/10.1117/12.820614
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