Fausto Meli

TL;DR: In this paper, a device for adding/dropping optical signals into/from an optical transmission path, including input means for at least two optical signals with distinct wavelengths, comprising: spectral selection means for sending at least a first signal to a first optical path and at least another signal to another optical path; at least wavelength selective switching means along at least one of said first and second optical paths, for adding and dropping one optical signal having a predetermined wavelength selected from the optical signal wavelengths.

TL;DR: In this paper, a method of selectively compensating for the chromatic dispersion of optical signals in an optical telecommunication network, comprising the steps of transmitting at least two signals over a common portion of said network, separating at least one of the signals from the remaining signals at at least 1 point of the network and recombining said signal with the remaining signal at said one point of network, is proposed.

TL;DR: In this article, the position and attenuation of the differential-attenuation means and filtering means and the wavelength band are selected in a functional relation with respect to each other in order to limit the output power variations from the pre-amplifier.

TL;DR: In this article, the authors proposed a method and a device to add and drop optical channels in an optical transmission system, in which a multi-channel optical signal is transmitted into an optical fiber line (300).

TL;DR: An optical telecommunication system comprising a transmitting station and a receiving station for optical signals, connected with each other by an optical fiber line including optical line amplifiers having a rare-earth-doped active fibre and connected in series, in which the transmitting station comprises generation means for generating signals at several predetermined wavelengths, and conveyor means for conveying said signals to a single optical fibre line, and said optical signal receiving station comprises separation means for separating said signals, in case at least one of said optical line amplifier has dopants, fibre length and pumping power capable of determining,