Transmission system on a fiber optic line without a repeater, with a local and remote applications.

摘要

The invention relates to a system of transmission on a fiber optic line (1) without repeaters between a transmitter (2) and a reception terminal (3 '), the type using a remote optical amplification and a local optical amplification, in reception, the said optical amplification consists in sending a distance from the reception terminal (3'), a pump beam (10) in the direction of at least one section of a doped fiber dist ante (9) situated upstream in the fiber optic line (1), said reception terminal (3 ′) comprising, in particular, the means (6) of pumping, making it possible to generate said pump beam (10) and it is injected into the fiber optic line (1), and means for effecting the said optical amplification. & br / according to the invention, said means (12) of the local optical amplification are constituted by at least one section of fiber doped locally, located in the reception terminal (3 '), between said means (6) of the pump and the fiber optic line (1).