Open AccessSpectral self-imaging of time-periodic coherent frequency combs by parabolic cross-phase modulation
Author(s) -
Reza Maram,
José Azaña
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028824
Subject(s) - optics , physics , talbot effect , frequency comb , phase modulation , modulation (music) , frequency modulation , bandwidth (computing) , spectral density , phase (matter) , spectral envelope , wavelength , pulse (music) , telecommunications , laser , phase noise , acoustics , computer science , quantum mechanics , detector , grating
Integer and fractional spectral self-imaging effects are induced on infinite-duration periodic frequency combs (probe signal) using cross-phase modulation (XPM) with a parabolic pulse train as pump signal. Free-spectral-range tuning (fractional effects) or wavelength-shifting (integer effects) of the frequency comb can be achieved by changing the parabolic pulse peak power or/and repetition rate without affecting the spectral envelope shape and bandwidth of the original comb. For design purposes, we derive the complete family of different pump signals that allow implementing a desired spectral self-imaging process. Numerical simulation results validate our theoretical analysis. We also investigate the detrimental influence of group-delay walk-off and deviations in the nominal temporal shape or power of the pump pulses on the generated output frequency combs.