Flat-topped chirp induced by optical filter edge

Details Flat-topped chirp induced by optical filter edge Flat-topped chirp induced by optical filter edge

H - Electricity

04

B

H04B 10/02 (2006.01) H04B 10/18 (2006.01) H04L 1/00 (2006.01)

Patent

CA 2561128

A fiber optic communication system comprising: an optical signal source adapted to produce a binary amplitude modulated signal; and an optical spectrum reshaper adapted to receive the amplitude modulated signal and to change the instantaneous frequency of the signal at its 0-to-1 and 1-to-0 transitions so as to change the instantaneous frequency of the signal so that it is substantially constant across the 1 pulse. A method for transmitting a signal through a fiber, comprising: generating a second signal from the signal,wherein the second signal comprises a intensity profile and an adiabatic frequency profile; generating a third signal from the second signal, wherein the third signal comprises a intensity profile and a flat-topped frequency profile.

La présente invention concerne un système de communication optique comprenant une source de signaux optiques qui est conçue pour produire un signal binaire modulé en amplitude, ainsi qu'un reprofileur de spectre optique qui est conçu pour recevoir le signal modulé en amplitude et pour modifier la fréquence instantanée du signal à ses transitions 0 à 1 et 1 à 0, de manière qu'elle soit sensiblement constante sur l'impulsion 1. La présente invention concerne également un procédé pour transmettre un signal sur une fibre. Ce procédé consiste à produire un deuxième signal à partir dudit signal, ce deuxième signal comprenant un profil d'intensité et un profil de fréquence adiabatique, puis à produire un troisième signal à partir du second signal, ce troisième signal comprenant un profil d'intensité et un profil de fréquence à plateau.

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