Widely fatness gain bandwidth with double pass parallel hybrid fber amplifer

Gürkaynak I. A. , Al-Mashhadani M. K. S. , Ali M. H. , Al-Mashhadani T. F. A. , Gündüz A. E. , Yucel M., ...More

Optical And Quantum Electronics, vol.53, pp.359-369, 2021 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 53
  • Publication Date: 2021
  • Journal Name: Optical And Quantum Electronics
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.359-369


A Widely fatness gainbandwidth with double pass parallel hybrid fber amplifer is experimentally demonstrated in this study. The proposed design combines serial erbium–Raman fber amplifer in one branch and Raman fber amplifer in the second branch. Multiple Raman pump units with a maximum power of 800 mW (250 mW of 1410 nm, 225 mW of 1480 nm, and 325 mW of 1495 nm) are utilized. Pump recycling technique is applied to achieve acceptable pumping efciency. A maximum fatness gain bandwidth of 80 nm (1525–1605  nm) and average gain level of 22.5  dB are obtained at a small input signal power of −25  dBm and optimum pump power values. While, a wider fatness gain of 90 nm (1520–1610 nm) and average gain level of 11.5 dB are achieved at a large input signal power of −5 dBm.