Different measurement devices are used to test optical fibers. In addition to analyzers and power measurement devices, optical sources that can be readout with the help of monitors are also used.
Characterization of the fiber geometry according to IEC-60793-1-20 Annex B via measurement is essential for the production of optical fibers, as well as their use in specialized applications.
The FGC-G fiber geometry measurement system makes it possible to measure the optical end surface geometry of optical fibers very fast. Special gray-scale video technology is used that is defined as a reference method in the IEC-60793-1-20 Annex B standard. This system calculates the geometric parameters of the fiber, including the core diameter, the non-circularity of the core, the cladding diameter, the non-circularity of the cladding, and the core-to-cladding concentricity.
There are two different types available for selection.
The FGC-GT model is optimized for fibers with a diameter of 125 µm. Some typical applications include measurements performed during the development and production of single-mode and multi-mode fibers, as well as the measurement of specialty fibers.
The FGC-GS model can measure fibers with a diameter of up to 1 mm and is optimized for the measurement of specialty fibers (e.g., octagonal fibers or dual-cladding fibers).