Fiber positioners from OWIS allow adjustment to a resolution of 20 nm

FAPO 40, 50, and 65 fiber positioners allow adjustment to a resolution of 20 nm. They come with either FC or SMA adapters, and the 40 and 65 models, for up to four axes, are available with fine-thread screws that provide a spindle pitch of 0.15 mm. The 50 model allows adjustment of three axes.
OWIS
Staufen, Germany
www.owis.eu