LIEKKI™ Yb1200-6/125 fibers are highly doped single mode ytterbium fibers for medium-power fiber laser and amplifier applications. Their telcom-like geometry makes them compatible with many fiber based components like fiber gratings and combiners. They are ideal fibers for low-cost marking lasers and pumping sources.

LIEKKI™ Yb1200-6/125 fibers are available as double cladding (Yb1200-6/125DC) and double cladding polarization maintaining (Yb1200-6/125DC-PM) fibers.