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Opt Express. 2009 Feb 2;17(3):1988-94.

Efficient multi-mode to single-mode coupling in a photonic lantern.

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Crystal Fibre A/S, Blokken 84, DK-3460 Birkerød, Denmark.


We demonstrate the fabrication of a high performance multi-mode (MM) to single-mode (SM) splitter or "photonic lantern", first described by Leon-Saval et al. (2005). Our photonic lantern is a solid all-glass version, and we show experimentally that this device can be used to achieve efficient and reversible coupling between a MM fiber and a number of SM fibers, when perfectly matched launch conditions into the MM fiber are ensured. The fabricated photonic lantern has a coupling loss for a MM to SM tapered transition of only 0.32 dB which proves the feasibility of the technology.

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