双色噪声驱动光学双稳系统的弛豫时间研究

Relaxation time for an optical bistable system subjected to cross-correlated color noises

研究乘性及加性噪声的自关联时间τ1和τ2,交叉关联时间τ对光学双稳系统的弛豫时间的影响.弛豫时间T由Mei等所采用的方法得到.经数值计算,结果表明:两噪声间交叉关联时间τ及乘性噪声的自关联时间τ1延缓系统涨落的消退(T随τ及τ1的增大而增大);T随加性噪声的自关联时间τ2的增大出现峰值.

Investigated are the effects of the cross-correlation time T or the self-correlation times T1 and T2 on the relaxation time T of an optical bistable system using the M ei＇s method（ M ei D C, Xie C W, Zhang L 2003 Phys. Rev. E 68 051102）. It is found that the relaxation time T increases with the increase of the cross-correlation time T between the two noises or the self-correlation time T1 of the multiplicative noise, and that a one-peak structure appears on the T - T2 plot. T increases with the increase of correlation intensity A but decreases with the increase of muhiplicative noise intensity Q.