Diffraction-controlled wavelength dependence of the effective mode area S<sub>eff</sub><sup>(λ)</sup> in optical fibers can serve as a mechanism limiting the soliton self-frequency shift induced by the Raman effect in materials with retarded nonlinearity. By numerically solving the generalized nonlinear Schrödinger equation modified to include the S<sub>eff</sub><sup>(λ)</sup> dependence, we show that, as the central wavelength of the soliton increases, the waveguide mode tends to become less compact, slowing down the soliton self-frequency shift. As a result, for optical fibers with a steep S<sub>eff</sub><sup>(λ)</sup> profile, wavelength uncertainties and the timing jitter of the frequency-shifted soliton induced by input power fluctuations can be substantially reduced compared with fibers with a weak S<sub>eff</sub><sup>(λ)</sup> dependence.
© 2006 Optical Society of America
Original Manuscript: January 23, 2006
Revised Manuscript: May 2, 2006
Manuscript Accepted: May 3, 2006
Evgenii E. Serebryannikov and Aleksei M. Zheltikov, "Soliton self-frequency shift with diffraction-suppressed wavelength variance and timing jitter," J. Opt. Soc. Am. B 23, 1882-1887 (2006)