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Undistorted Delivery of Ultra-short Laser Pulses through Triangular Core Fiber
This paper presents triangular core fiber for single-mode operation. The fiber supports single mode at a wavelength of 1550-nm, and it has an extremely large mode area of 2000 μm2. With peak power of 85.4-kW at 1550 nm wavelength, fiber design demonstrates undistorted delivery of 100 fs laser pulses. We have used Transfer matrix method to analyse the fiber. The split-step Fourier method has been used to solve the non-linear Schrodinger equation. Raman’s response and self-steepening have also been taken in to account. In this paper, we report the numerical demonstration of propagation of 100-fs pulse with peak power of 85.4-kW at 1550-nm wavelength through 2.5 m long fiber. The ratio of dispersion length to nonlinear length has been kept as 1 for the delivery of undistorted pulses.
Keywords
Single mode fiber; Ultra-short pulses; Pulse propagation; Large mode area; Triangular core fiber
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