AMPLIFIER FOR MESSAGE TRANSMISSION LINES MADE OF OPTICAL FIBERS AND MESSAGE TRANSMISSION LINES MADE OF OPTICAL FIBERS WITH THIS AMPLIFIER.

摘要

An optical amplifier (3) in accordance with the invention consists of the assembly of a length of active-core optical fiber (8), single-mode to both pumping and signal optical radiations, and a dichroic coupler (6) comprised of two optical fiber lengths (9, 10), both single-mode to pumping and signal optical radiations, coupled to each other over one portion (11) by fusion of the respective claddings and substantial setting in common of the respective cores in said portion (11).