Abstract

In this manuscript, we present the planning and numerical investigation of SCG (Supercontinuum Generation) on a microstructure HNL-PCF (Highly nonlinear Photonic Crystal Fiber). SiO2 is the background material for our proposed HNL-PCF where air holes are embedded within the cladding contour to supervise light confinement. The fiber has shown prospective application on dental optical coherence tomography (OCT) by possessing one near-zero dispersion point at operating wavelength 1300 nm. Authors come to the conclusion that wavelengths ranging from 1.3 to 1.5 μm have a better purpose of use in OCT systems. we have used the FEM for numerical calculation and nonlinear Schrodinger equation is used for SCG which is solved by split-step Fourier method. The study demonstrated 90 nm broad spectral (10 dB bandwidth), for an 80 m long fiber, is obtained by propagating the sech2 2.5 ps pulse width at an FWHM (full width at half maxima) while the facility of the input optical pulse is 80 W. On its account, the utmost longitudinal resolutions within the depth direction for dental OCT are found: for enamel 4.10 μm and for dentin 4.39 μm.

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