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Suppression of stimulated Brillouin scattering in pulsed erbium-doped fiber amplifier through intensity-modulated counter pumping

机译:通过强度调制反泵浦抑制掺pulse光纤放大器中的布里渊散射

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摘要

We suppress stimulated Brillouin scattering in an erbium-doped optical fiber amplifier for 50-ns-long transform-limited signal pulses by counter-directional pumping with a pulse burst. The pump pulse burst is codir-ectional with the parasitic Brillouin Stokes wave, which, therefore, undergoes cross-phase modulation and thus spectral broadening due to the intensity-modulated pump. The broadening inhibits its growth. We experimentally study the effect of pump pulse parameters and improve the SBS threshold by up to 4 dB when amplifying signal pulses at a wavelength of 1565 nm With pumping at 1536 nm.
机译:我们通过脉冲突发的反向泵浦,在掺50光纤放大器中抑制了50 ns长的变换限制信号脉冲中的受激布里渊散射。泵浦脉冲猝发与寄生布里渊斯托克斯波成正比,因此,由于强度调制泵浦,其经历了交叉相位调制并因此频谱展宽。变宽会抑制其生长。我们通过实验研究泵浦脉冲参数的影响,并在以1536 nm泵浦放大1565 nm波长的信号脉冲时,将SBS阈值提高了4 dB。

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