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In this work we report a -24dB LP11 mode suppression in a 7+1 to 1 Backward Pump-Signal Combiner. The mode content is measured using the S2 -Measurement technique. The high signal beam quality is attributed to a low overlap splice loss between the Tapered Fiber Bundle and the output fiber. The combiner output fiber is large mode area with a LP01 mode effective area of 584 um2.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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L. Bansal, R. Sienkowski, C. Neale, J. Mann, J. W. Nicholson, "S2 mode content measurement of a 7+1 to 1 backward pump-signal combiner," Proc. SPIE 12866, Components and Packaging for Laser Systems X, 1286604 (12 March 2024); https://doi.org/10.1117/12.3003085