研究目的
Investigating the influence of Raman pump direction on the performance of a serial hybrid Raman/erbium-doped fiber amplifier in the C+L optical communication bands.
研究成果
The study concludes that the Raman pump direction significantly affects the performance of serial hybrid fiber amplifiers, with Type B (counter-pumping) providing better gain and wider dynamic range at large input signals, albeit with a higher noise figure. This is attributed to faster saturation in Type A due to stimulated Brillouin scattering.
研究不足
The study highlights the trade-off between gain and noise figure in different pumping schemes, with Type B showing better performance at large input signals but with higher noise figure compared to Type A.
1：Experimental Design and Method Selection:
The study involved simulation and experimental validation of two different schemes of serial hybrid fiber amplifiers (Type A and Type B) using Optisystem-
2：Sample Selection and Data Sources:
A tunable laser source with varying power and wavelengths was used as input.
3：List of Experimental Equipment and Materials:
Included a Raman pump unit, dispersion compensating fiber, erbium doped fiber, variable optical attenuator, and wavelength selective coupler.
4：Experimental Procedures and Operational Workflow:
The setup involved pumping the EDFA with residual Raman pump power controlled by a VOA, and output spectra were recorded using Optical Spectrum Analyzers.
5：Data Analysis Methods:
The performance was evaluated based on gain profile and noise figure at different input signal powers.
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