Optical EngineeringComparative study of the influence of the aspect ratio of trapezoidal index profiles on the performance of a fiber Raman amplifier
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We have sought a suitable coaxial refractive index profile with dispersion-flattened and dispersion-shifted criteria in the context of a single-mode Raman gain amplifier. We present a novel comparative study based on the effective core area and Raman gain coefficient in relation to the effect of aspect ratios of trapezoidal index profiles in the inner core on the Raman gain.