LIMA, I. A.; http://lattes.cnpq.br/6865119422219899; LIMA, Ísis de Andrade.
Résumé:
When exposed to strong electromagnetic fields, optical fibers present nonlinear
behavior, which should be considered in the design of optical communication systems.
One of these nonlinear effects in optical fibers is Raman scattering, which does not
affect single channel systems significantly, but has great influence on multichannel
systems.
Such effect consists in a frequency shifting on the incident signal, resulted by
interaction with molecules of silica, with loss of energy.
Deteriorating characteristics of Raman scattering effect are represented by
Raman crosstalk phenomenon. Moreover Raman scattering has an important application
as broadband optical amplifier.
This paper presents the fundamentals of Raman optical scattering, its
applications in Raman amplifiers and Raman crosstalk effect.
Simulation results showing optical signals power distribution in fibers with
Raman scattering occurrence are presented, leading to the observation of the theoretical
behavior studied.