Abstract
Present communication providesa hybrid amplifier that can find suitable applications in DWDM optical network. The proposed hybrid amplifier includes EDFA and Raman amplifiers to envisage high gain characteristics for 64 channels in both the S + C band and S + C + L wavelength band (1545–1570 nm). Various parameters of the hybrid amplifier, such as doping concentration, pump power, pump wavelength, and fiber length, is chosen to optimize the gain profile. Aside from this, simulation upshots for individual amplifiers infer that EDFA shows a high gain of 22.1 dB for co-directional pumping, and the Raman amplifier deduces a gain of 12.2 dB for counter-directional pumping, whereas the EDFA-Raman hybrid amplifier bestows a substantial-high gain of 23.03 dB for co-directional pumping configuration. Additionally, it has been inferred that the hybrid amplifier offers a very minimal gain ripple of 0.8 dB, which indicates the gain is almost flat. The pump power, length, and doping parameters of EDFA and Raman amplifiers are optimized to get the flat gain of the Hybrid amplifier. It has been demonstrated that a maximum gain of 23.03 dB for a 64 × 10 Gbps, 25 GHz system is attainable up to 100 km of transmission distance. Hence, considering the aforementioned high gain and flat gain characteristics, the suggested EDFA-Raman hybrid amplifier opens up an avenue for future optical dense wavelength division multiplexing systems.
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