Soliton transmission simulations in long optical fibers hybrid lines with distributed Raman amplification

The exponential increase of the demand for data transmission, largely impelled by the popularization of the Internet, has motivated the continuous search for increasing the capacity of the data transmission means. Optical fibers have supported this increase of the demand through the increase of its transmission capacity. Many researchers consider that the future of the long distance optical transmissions could be the combination of WDM techniques and soliton transmission. This paper tells, in summarized way, the work that is being accomplished in the Presbyterian University Mackenzie in the area of optical communications, more specifically in the soliton transmission of 40 Gbit/s rates and long distances. The distributed Raman amplification (DRA) is used to compensate the attenuation of the optical fiber. Long distances up to 50.000 km are investigated, using simulations works. No relevant distortions in the pulse shapes were detected in pulse width of 1,55 ps.