Abstract
We demonstrate low-threshold supercontinuum generated in a highly nonlinear arsenic selenide chalcogenide nanowire with tailored dispersion. The tapered submicrometer chalcogenide fiber exhibits an ultrahigh nonlinearity, and an effective mode area of , yielding an effective nonlinearity of , which is over 80,000 times larger than standard silica single-mode fiber at a wavelength of . This high nonlinearity, in conjunction with the engineered anomalous dispersion, enables low-threshold soliton fission leading to large spectral broadening at a dramatically reduced peak power of several watts, corresponding to picojoule energy.
© 2008 Optical Society of America
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