Abstract
In this work, we design semiconductor core normal dispersion optical fibers in the single-mode regime to observe the phenomena of nonlinear pulse reshaping through them. Initially, a Ge-core fiber is proposed, considering pure silica material as the cladding of the fiber. It is observed that the designed fiber is capable of generating a semi-parabolic pulse (SPP) (misfit value ≤ 4%) within a much shorter fiber length (~ 5 cm) while a Sech pulse of very low peak power (~100 mW) is taken as input at the operating wavelength of 2.8 μm. Various fiber parameters and pulse parameters are optimized next for the betterment of the generated pulse. Finally, a comparative study between the Ge-core and Si-core fibers is accomplished to identify the best possible fiber for the generation of efficient SPP at a sufficiently small fiber length.
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