Fiber Bragg Gratings with a temperature induced chirp are used to control and optimize the power spectral density of a Raman-MOPA by influencing the FWM-based power dependent spectral broadening.
Stimulated Brillouin-Scattering (SBS) limits the spectral power density of fiber amplifiers and lasers. Theory and measurements of SBS in fibers with a defined strain distribution are presented. SBS threshold was increased by a factor of 20.
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