Abstract
Spectral broadening of a high power light wave in optical fiber due to four-wave mixing and/or self-phase modulation is a well studied nonlinear effect that has a number of practical applications [1]. The spectral broadening may be achieved both in anomalous and normal dispersion fiber. In this work, we have observed experimentally and confirmed through comprehensive numerical modeling that the spectral width of a powerful wave produced by a Raman fiber laser can experience spectral compression after propagation in a long enough normal dispersion fiber.
© 2015 IEEE
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