It is known that several methods are available in order to measure a single parameter on the fiber. In the industry, one is concerned with the efficiency in terms of time and accuracy of the selected method. The paper presents some results obtained in a cable plant and the statistics related to the most important parameters such as attenuation, bandwidth, numerical aperture, geometry of the fiber cross section.
Michel G. Berniere,
"Industrial Measurement Methods For Multimode Fiber", Proc. SPIE 0584, Optical Fiber Characteristics and Standards, (15 April 1986); doi: 10.1117/12.950990; https://doi.org/10.1117/12.950990