Based on the generalized stochastic nonlinear Schrödinger equation, the effect of intrapulse Raman scattering (IRS) on broadband amplitude noise of supercontinuum (SC) generated in the normal dispersion regime is investigated numerically. The results show that, in the normal dispersion regime, where the IRS contributes less to the bandwidth of the SC spectrum, the broadband amplitude noise of SC is amplified significantly in the process of SC generation because of the existence of IRS effect. Using fiber with an optimal negative dispersion slope, the IRS effect can be suppressed, and thus the SC amplitude noise is reduced without spectral bandwidth loss.
© 2012 Optical Society of America
Original Manuscript: September 27, 2011
Revised Manuscript: December 21, 2011
Manuscript Accepted: December 30, 2011
Published: April 11, 2012
Huifang Ma, Xia Zhang, Qi Jing, Yongqing Huang, and Xiaomin Ren, "Effect of intrapulse Raman scattering on broadband amplitude noise of supercontinuum generated in fiber normal dispersion region," Appl. Opt. 51, 1962-1967 (2012)