This part of IEC 60793 establishes uniform requirements for measuring the length and elongation of optical fibre (typically within cable). The length of an optical fibre is one of the most fundamental values and shall be known for the evaluation of transmission characteristics such as losses and bandwidths.
DS/EN 60793-1-22:2002 history
2002DS/EN 60793-1-22:2002 Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement