Abstract :
The first part of the research involves, investigate the aspect of the radiation superposed on the one bright soliton pulse propagated in ideal single mode optical fiber. According to the numerical study, the radiation has no affect on the one of birght soliton, leaving the one soliton bright pulse preserve its shape (hyperbolic secant shape) propagates along the communication system . For this reason bright solitons could be useful as information carriers in optical fibers communications system for achieving high bit rates. The second part of the research involves, study absorption effect on the performances of the radiation superposed on the one bright or black soliton pulse propagated in natural single mode optical fiber. The study shows the aspect of the one bright soliton pulse lost its shape along the path of the link designed. But the affect of the absorption on the black soliton superposed on the radiation pulse was big that lead to stop the black soliton pulse propagates directly after the first stage of the communication system.
