A method is provided for predicting an installed performance parameter of
an optical fiber cable. The method includes obtaining a measurement
indicative of a value of the performance parameter at a first moment in
time. A measurement indicative of a value of the performance parameter at
a second moment in time may then be obtained. A first correlation may
then be determined between the measurement at the first moment in time
and the measurement at the second moment in time. A value of the
performance parameter at the second moment in time may then be estimated
based upon the measurement at the first moment in time in combination
with the first correlation, the first correlation being based upon
observations of a manner in which the performance parameter varies over
time for at least a second optical fiber.