Numerical simulations are used to investigate parabolic pulse generation in tapered silicon optical fibers. The simulations are based on a realistic silicon fiber taper with micrometer-sized core dimensions, designed to have a decreasing normal dispersion profile, and include the effects of linear and nonlinear absorption. Evolution to the parabolic regime is quantified by a misfit parameter, and the optimum values for the input pulse and taper length are established. The results identify a distortion-free nonlinear propagation window for the transmission of optical pulses in normal dispersion silicon waveguides.
© 2010 Optical Society of America
Original Manuscript: March 8, 2010
Revised Manuscript: April 21, 2010
Manuscript Accepted: April 27, 2010
Published: May 20, 2010
Anna Peacock and Noel Healy, "Parabolic pulse generation in tapered silicon fibers," Opt. Lett. 35, 1780-1782 (2010)