Browsing by Subject "Optical computed"
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Item Calculation of the expected output spectrum for a mid-infrared supercontinuum source based on As₂S₃ chalcogenide photonic crystal fibers(Optical Society of America, 2014-09-08) Weiblen, R. J.; Docherty, A.; Menyuk, Curtis; Shaw, L. B.; Sanghera, J. S.; Aggarwal, I. D.We computationally investigate supercontinuum generation in an As₂S₃ solid core photonic crystal fiber (PCF) with a hexagonal cladding of air holes. With a goal of obtaining a supercontinuum output spectrum that can predict what might be seen in an experiment, we investigate the spectral and statistical behavior of a mid-infrared supercontinuum source using a large ensemble average of 10⁶ realizations, in which the input pulse duration and energy vary. The output spectrum is sensitive to small changes (0.1%) in these pulse parameters. We show that the spectrum can be divided into three regions with distinct characteristics: a short-wavelength region with high correlation, a middle-wavelength region with minimal correlation, and a long-wavelength region where the behavior is dominated by a few rare large-bandwidth events. We show that statistically significant fluctuations exist in the experimentally expected output spectrum and that we can reproduce an excellent match to that spectrum with a converged shape and bandwidth using 5000 realizations.