Optimization of a Raman/EDFA hybrid amplifier based on dual-order stimulated Raman scattering using a single-pump

Zhaohui Li, Chun Liu Zhao, Yang Jing Wen, Chao Lu, Yixin Wang, Jian Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


Based on dual-order stimulated Raman scattering (SRS) of a single 1395 nm Raman fiber laser in 75 km single mode fiber and its corresponding dispersion compensation module, a hybrid Raman/Erbium doped fiber amplifier (EDFA) for long wavelength band (L-band) amplification is realized by inserting a segment of EDF within the span. By comparing the performance of gain and noise in four hybrid amplifiers with different span configurations, we find that the distribution of the secondary L-band amplification obtained from the EDF along the link has a great influence on the performance of the hybrid amplifier. Both gain and noise performance of hybrid amplifier can be improved significantly by optimizing the location of the EDF. Moreover, we can extend the flat gain bandwidth from L-band to central wavelength band (C-band) plus L-band by recycling the residual first-order SRS to pump a segment of EDF with proper length.
Original languageEnglish
Pages (from-to)655-658
Number of pages4
JournalOptics Communications
Issue number2
Publication statusPublished - 15 Sep 2006


  • Dual-order stimulated Raman scattering and hybrid amplifier
  • Raman amplifier

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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