Optical clock extraction

H - Electricity – 04 – B

Patent

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Details

H04B 10/148 (2006.01) H01S 5/06 (2006.01) H01S 5/40 (2006.01) H04L 7/00 (2006.01) H01S 5/065 (2006.01) H01S 5/227 (2006.01) H01S 5/50 (2006.01) H01S 3/19 (1995.01)

Patent

CA 2105659

In a high speed optical clock extraction arrangement, an incoming digital signal is divided between two paths (11, 25). The signal on one path (25) is fed direct to a receiver (203), while the signal on the other path (11) is fed to a non-linear optical amplifier (1) which has separate gain and absorbing regions. The non-linear optical amplifier (1) is triggered by the incoming signal to pulsate at a clock frequency contained in the signal, and the resultant strong output clock signal is coupled into the path (25) carrying the incoming signal to the receiver (203). The non-linear optical amplifier (1) can provide a very high frequency clock output as a result of selective modification of the carrier lifetime.

Dans un montage d'extraction d'horloge optique à grande vitesse, un signal numérique d'arrivée est divisé entre deux trajets (11, 25). Le signal présent sur un trajet (25) se rend directement à un récepteur (203), tandis que le signal sur l'autre trajet (11) est appliqué à un amplificateur optique non linéaire (1), caractérisé par des régions distinctes de gain et d'absorption. L'amplificateur optique non linéaire (1) est déclenché par le signal d'entrée, au rythme impulsif correspondant à la fréquence d'horloge du signal, et l'intense signal d'horloge de sortie résultant est couplé au trajet (25) d'acheminement du signal d'entrée vers le récepteur (203). L'amplificateur optique non linéaire (1) peut produire une sortie d'horloge de très haute fréquence en raison de la modification sélective de durée de vie de la porteuse.

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