![FC-Adapter für P10- und P20-Ulbrichtkugeln](https://artifex-engineering.com/wp-content/uploads/P10_Adapter_FC_freigestellt_1024x695px-1.jpg)
We use our proprietary design of adapters for fiber input into integrating spheres and free-beam detector heads of optical power meters.
This is to eliminate back reflections into the detector and resulting miscalibration of the detector. (For detailed explanation see here!)