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Cross-phase-modulation-induced pulse delay or advancement in an optical fiber is analyzed. It is shown that XPM and group-velocity mismatch can lead to controllable pulse delay or advancement with negligible frequency shift.
We demonstrate propagation and compression of 14-nJ, 152-fs pulses in the 2100-mum2 effective area, LP07 mode of an intentionally multi-moded fiber. The 12-m length of fiber was coiled to a radius of curvature of 7.5 cm.
Scattering of a dispersive wave on a soliton in a cobweb PCF resulting in generation of new spectral components is observed directly with XFROG technique. Recent analytical theory and numerical modeling confirm the results.
We show analytically and numerically that parabolic pulses and similaritons are not always synonyms and that a self-phase modulation amplification regime precedes the self-similar evolution. Properties of the recompressed pulses after SPM amplification are investigated.
Soliton self-frequency shifting from 1 mum to 1.5 mum, connecting the ytterbium and erbium emission wavelengths, is demonstrated. It is confirmed that the timing jitter induced by the shifting is mainly caused by the laser intensity noise.
We report on the development of simple, femtosecond soliton sources based on the propagation of CW noise through a highly nonlinear fiber. A method of wavelength extension to the visible is proposed.
Pulse propagation in Er3+-doped fiber amplifiers (EDFA) is studied within the framework of a spectrally-resolved pulse rate-propagation equations model. Calculated pulse spectrograms demonstrate the effects of dispersion on sub-picosecond pulse propagation in EDFAs.
An overview of nonlinearities in optical fibers starting from fundamental interactions to their application in optical communication systems will be presented. Advanced techniques to mitigate or to use fiber nonlinearities will be reviewed.
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