Improved distributed Raman amplification process in an optical fibre

摘要

The primary optical signal (F1) circulating between a transmitter (1) and a receiver (3), is amplified in an optical fiber (2) by optical pump signals with different wavelengths (lambda2,lambda3), produced from submodules (8,9), using the specific order stimulating Raman scattering effect. The tertiary signals with wavelength (lambda1) from submodule (7), amplifies power of pump signals by another order stimulating Raman scattering effect. Independent claims are also included for the following: (1) optical signals amplifying device; (2) optical signal receiver station.