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Modeling the inhibition of stimulated Raman scattering in passive and active fibers by lumped spectral filters in high power fiber laser systems

: Jansen, F.; Nodop, D.; Jauregui, C.; Limpert, J.; Tünnermann, A.

Postprint (530 KByte; PDF; )

Optics Express 17 (2009), No.18, pp.16255-16265
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()
long-period grating; suppression; amplifier; fabrication; written

We report on the simulation of stimulated Raman scattering inhibition by lumped spectral filters both in passive optical transport fibers and in fiber amplifiers. The paper includes a detailed theoretical study that reveals the parameters that have the strongest influence on the suppression of the Raman scattering, such as the filter distribution and the insertion losses at the signal wavelength. This study provides guidelines for the use of spectral filtering elements, such as long period gratings, for Raman scattering inhibition in real-world high power fiber amplifiers.