Non-linear optical coupler

G - Physics – 02 – B

Patent

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G02B 6/42 (2006.01) G02F 1/35 (2006.01)

Patent

CA 2231256

An integrated optics non linear coupler presents on a surface a first and a second waveguide (2, 3) coupled contradirectionally by means of a distributed feedback grating (10). The first waveguide (2) defines an input port (4) and a first output port (5) of the device (transmission output) and the second waveguide (3) defines a second output port (6) of the device (reflection output). By means of an optical control signal injected into the device together with an information signal, the device can be brought to conditions of non-linear operation, thus making the grating (10) switch from transmitting to reflecting behaviour or vice versa with respect to a given wavelength. (FIGURE 1)

L'invention est un coupleur optique non linéaire intégré portant sur une surface un premier et un second guide de lumière (2, 3) couplés en sens opposés par un réseau à rétroaction réparti (10). Le premier guide de lumière (2) définit un port d'entrée (4) et un premier port de sortie (5) du dispositif de l'invention (sortie de transmission) et le second guide de lumière (3) définit un second port de sortie (6) du dispositif (sortie de réflexion). Au moyen d'un signal de commande introduit dans le dispositif avec un signal d'information, le dispositif peut être mis en mode de fonctionnement non linéaire, ce qui amène le réseau (10) à passer du régime de transmission au régime de réflexion ou vice versa à une longueur d'onde donnée. (FIGURE 1)

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