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Abstract
We present an adaptive numerical filter for analyzing fiber-length dependent properties of optical rogue waves, which are highly intense and extremely red-shifted solitons that arise during supercontinuum generation in photonic crystal fiber. We use this filter to study a data set of 1000 simulated supercontinuum pulses, produced from 5 ps pump pulses containing random noise. Optical rogue waves arise in different supercontinuum pulses at various positions along the fiber, and exhibit a lifecycle: their intensity peaks over a finite range of fiber length before declining slowly.
Highlights
Supercontinuum (SC) light, generated by propagating intense laser pulses along photonic crystal fiber (PCF) [1,2,3,4], has attracted interest for many applications including frequency metrology [5,6], spectroscopy [7,8,9,10,11,12], telecommunications [13] and microscopy [14,15]
Optical rogue waves are packets of extremely intense and redshifted light that can arise during the propagation of laser light along nonlinear optical fiber
Rogue solitons were identified in a set of supercontinuum simulations performed using the RK4IP algorithm
Summary
Supercontinuum (SC) light, generated by propagating intense laser pulses along photonic crystal fiber (PCF) [1,2,3,4], has attracted interest for many applications including frequency metrology [5,6], spectroscopy [7,8,9,10,11,12], telecommunications [13] and microscopy [14,15]. When SC light is generated from long pump pulses, the initial phase of propagation involves modulation instability which can be interpreted as the growth of Akhmediev breather structures [27,28] This leads to a regime of turbulent collisions, in which further effects such as Raman scattering and dispersive wave trapping give rise to the broad supercontinuum spectrum [29,30]. In studies of RS, a spectral filter is often applied to the supercontinuum This selects only the long-wavelength extreme of the spectrum where RS are prominent, and allows the corresponding intensities to be identified [16,19]. This behavior has implications for the design of spectrally stable SC light sources
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