Nonlinear empirical equations of (n2/Aeff) and n2 for various Ge-doped single mode optical fibers

ITU-T round robin measurement results for nonlinear constant (n
2
/A
eff
) of various Ge-doped optical fibers using various methods are presented. Nonlinear empirical equations between (n
2
/A
eff
) and A
eff
, also n
2
and A
eff
are proposed.