CHROMATIC DISPERSION COMPENSATION IN A BROADBAND OPTICAL TRANSMISSION SYSTEM

摘要

The invention concerns chromatic dispersion and chromatic dispersion slope compensation in optical fibre transmission systems. It consists in using for chromatic dispersion compensation in the transmission fibre (4i) dispersion compensation fibre (12) and a plurality of Bragg gratings (15, 16, 17). Each Bragg grating has a bandwidth more than 25 nm, so as to enable the use of the system on widebands. Moreover, the Bragg grating compensates less than 250 ps/nm in absolute value, so that it is easy to produce in spite of the broadband. The invention is in particular applicable to very high rate systems (above 40 Gbits/s for each channel) with useful band between 1250 and 1650 nm.