Abstract
Nearly pedestal-free optical pulse compression using self-similar chirped
optical solitons near the photonic bandgap (PBG) structure of nonlinear fiber
Bragg gratings (NFBGs) with exponentially decreasing dispersion is investigated
using the generalized nonlinear coupled-mode equations (NLCMEs). The full
dispersion characteristics and the effect of PBG are included. We find that
the ratio of the frequency detune of the pulse's center frequency from the
Bragg frequency of the NFBG to coupling coefficient of the NFBG is an important
design parameter of the NFBG optical pulse compressor. We carried out a comprehensive
study on the effect of the ratio of frequency detune to coupling coefficient,
grating length, initial chirp, initial dispersion, and initial pulsewidth
on the self-similar optical pulse compression. We also studied the compression
of both the hyperbolic secant and Gaussian-shaped pulses and the effect of
variation in the initial pulsewidth on the optical pulse compression.
© 2011 IEEE
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