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17 February 2010 7+1 to 1 pump/signal combiner for air-clad fiber with 15 µm MFD PM single-mode signal feed-through
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Abstract
A 7+1 to 1 pump/signal combiner with single-mode (SM) polarization maintaining (PM) 15 μm mode-field-diameter (MFD) signal feed-through is demonstrated. The combiner is designed for pulse amplification in an active Yb-doped airclad fiber operated in backward pumped configuration. Signal coupling through the device is realized by a microstructured taper element allowing single-mode guidance and constant MFD at a taper ratio of 3.4.
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D. Noordegraaf, M. D. Maack, P. M. W. Skovgaard, S. Agger, T. T. Alkeskjold, and J. Lægsgaard "7+1 to 1 pump/signal combiner for air-clad fiber with 15 µm MFD PM single-mode signal feed-through", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801A (17 February 2010); https://doi.org/10.1117/12.841557
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