Abstract
The intensity-dependent nonlinear coefficient $n_{2}/A_{{\rm eff}}$ of a short Er-doped, amplifying fiber is determined using a
method thoroughly studied for measurements of passive fibers. Measurement
uncertainty of 3.0% is achieved using modified continuous-wave self-phase
modulation method. In addition to metrological aspects, we also discuss
limitations and conditions imposed by the Er-doped fiber as compared with
the measurement of a pure silica core fiber. The used measurement method is
advantageous as compared with other techniques due to its reliability and
ease of implementation.
© 2009 IEEE
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