Re. Schuh et al., POLARIZATION OTDR MEASUREMENTS AND THEORETICAL-ANALYSIS ON FIBERS WITH TWIST AND THEIR IMPLICATIONS FOR ESTIMATION OF PMD, Electronics Letters, 32(4), 1996, pp. 387-388
The authors present an analytical solution for the back scattered stat
e of polarisation (SOP) from a uniformly linear birefringent fibre sub
ject to elastic twist which shows that the twist significantly influen
ces the periodicity of the observed signal from the polarisation optic
al time domain reflectometry (POTDR), and has to be taken into account
when estimating polarisation mode dispersion (PMD) using this techniq
ue. Experimental results confirm the predictions.