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Reduction of polarization-dependent gain due to signal-to-signal Raman interaction in fiber Raman amplifier

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6 Author(s)
Zhaohui Li ; Lightwave Dept., Inst. for Infocomm Res., Singapore, Singapore ; Zhihong Li ; Xiao Hann Lim ; Chao Lu
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An excellent polarization-dependent gain (PDG) suppression technique using a polarization scrambler is proposed in this letter. Investigations on PDG due to signal-to-signal Raman interaction among 40 wavelength-division-multiplexer signal channels were carried out experimentally to evaluate the system performance after incorporating a polarization scrambler in the system. It was confirmed by experiment that the use of polarization scrambler is an effective way to reduce PDG caused by signal-to-signal Raman interaction.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 3 )