Research Information System
Optical And Quantum Electronics, vol.53, pp.359-369, 2021 (SCI-Expanded, Scopus)
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.