Experimental study of inner structure in Infrared supercontinuum generation pumped by multi-pulse dynamics

In this paper, we report an experimental study of the supercontinuum (SC) generated by molecules of solitons (MS) and noise-like pulses (NLP) in two different types of optical fibers: 500m of standard fiber (SMF-28, Corning) and 100m of High-Nonlinearity Fiber with a zero dispersion-slope (HNLF-ZS, Furukawa). We extracted information on the inner structure of SC by using a nonlinear optical loop mirror (NOLM) as an intensity filter. The NOLM suppresses pulses with low peak power, which is especially pronounced for wavelengths longer than ~1750 nm for both fibers, and particularly in the region between 1450 nm and 1640 nm for the High-Nonlinearity fiber. It is worth mentioning that depending on the application, the required properties of SC light can vary considerably. Therefore, it is the main importance to know the properties of the different SC sources.

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