5 February 2013 Supercontinuum generation in dispersion-tailored lead-silicate fiber taper
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In this paper we numerically study the coherence properties of the supercontinuum generated in a lead-silicate microstructured fiber taper, with an increasing core radius along the propagation distance which tailors the dispersion property. Simulations are conducted by adding quantum noise into the input pulse at 1.55 μm, and the complex degree of first-order coherence function and the overall spectral coherence degree are both calculated. Although the spectral broadening is comparable, the coherence degree is shown to vary with different pumping conditions. It decreases with higher peak power and longer duration due to the significant competition between the soliton-fission process and the noise-seeded modulation instability. By controlling the input pulse parameters, it is possible to generate perfectly coherent supercontinuum with a flat broadened spectrum extending to ~5μm in this fiber taper.
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Hongyu Hu, Hongyu Hu, Wenbo Li, Wenbo Li, Shaozhen Ma, Shaozhen Ma, Niloy K. Dutta, Niloy K. Dutta, "Supercontinuum generation in dispersion-tailored lead-silicate fiber taper", Proc. SPIE 8647, Next-Generation Optical Communication: Components, Sub-Systems, and Systems II, 86470O (5 February 2013); doi: 10.1117/12.2001174; https://doi.org/10.1117/12.2001174

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