The digital communication in a system of two multi-mode solid state chaotic lasers is investigated theoretically. If the usual method working well in a single-mode laser system is applied to a multi-mode laser system,...The digital communication in a system of two multi-mode solid state chaotic lasers is investigated theoretically. If the usual method working well in a single-mode laser system is applied to a multi-mode laser system, the memory effect of the two nearest digits can cause high rate of mistakes when the digits are decoded through the subtraction of receiver output from the transmittal. By introducing the deviations of two nearest maximum and minimum fluctuationsof the signal to decode the digit, the message can be decoded correctly. Also, this communication method does not critically depend on the quality of the chaotic synchronization of the two multi-mode lasers.展开更多
The adiabatic approxination developed for stochastic differential equations is generalized to a multimode laser theory. A general formula of the multimode laser equation is derived. The single-mode and two-mode laser ...The adiabatic approxination developed for stochastic differential equations is generalized to a multimode laser theory. A general formula of the multimode laser equation is derived. The single-mode and two-mode laser eqnations investigated in most theoretocal analyses and experimental measurements are the first order approximation of the theoty.展开更多
基金The project supported by Natural Science Foundation of Jiangsu Province of China under Grant No.BK2001138
文摘The digital communication in a system of two multi-mode solid state chaotic lasers is investigated theoretically. If the usual method working well in a single-mode laser system is applied to a multi-mode laser system, the memory effect of the two nearest digits can cause high rate of mistakes when the digits are decoded through the subtraction of receiver output from the transmittal. By introducing the deviations of two nearest maximum and minimum fluctuationsof the signal to decode the digit, the message can be decoded correctly. Also, this communication method does not critically depend on the quality of the chaotic synchronization of the two multi-mode lasers.
文摘The adiabatic approxination developed for stochastic differential equations is generalized to a multimode laser theory. A general formula of the multimode laser equation is derived. The single-mode and two-mode laser eqnations investigated in most theoretocal analyses and experimental measurements are the first order approximation of the theoty.