DISPERSION COMPENSATION IN OPTICAL FIBRE TRANSMISSION

摘要

An optical fibre transmission system comprises an optical signal source operable to generate an optical signal at a predetermined bit rate and at a signal wavelength; an optical fibre transmission link connected at a first end to the signal source, the link having dispersion characteristics at the signal wavelength; an optical amplifier serially disposed in the link; and a signal receiver connected at the second end of the link; in which a grating is connected in the link, the grating being chirped by an amount providing at least partial compensation of the dispersion characteristics of the link, the compensation being such as to provide a signal, at the second end of the link, compatible with the sensitivity requirements of the receiver at the second end of the link.