Historical
IEC 60793-1-22 Ed. 1.0 b:2001
Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement
Gives methods for measuring the length and elongation of optical fibres (typically within a cable). Length is fundemental for evaluation of transmission characteristics such as losses and bandwidths. Five methods are described: delay measurement, backscattering, fibre elongation, mechanical length, and phase shift.
International Electrotechnical Commission [iec]

