Raman amplification is a way of increasing the signal strength in an optical fiber. It is often used in a fiber that carries a signal for a long distance (such as in an undersea cable). Technically, it works by stimulating, in which a lower frequency 'signal' induces of a higher-frequency 'pump' photon in an optical medium in the nonlinear regime. As a result, another 'signal' photon is produced, with the surplus energy resonantly passed to the vibrational states of the.
The Ivory Coast national football team (: Équipe de football de Côte d'Ivoire, recognized as the Côte d'Ivoire by ) represents in men's international. Nicknamed the Elephants, the team is managed by the (FIF). The team has won the three times, in, and, and has qualified for the four times, in,, and.