Apparatus for switching and scanning of clocked optical data

Details Apparatus for switching and scanning of clocked optical data Apparatus for switching and scanning of clocked optical data

G - Physics

02

F

G02F 1/35 (2006.01) H04J 14/08 (2006.01) H04L 7/00 (2006.01)

Patent

CA 2319953

The invention relates to a device for switching and scanning clocked optical data signals, especially digital optical data signals in a time multiplex schema. According to the invention, an optical switching device (10, 20, 21) is provided which comprises an amplification profile adapted to the spectral range of control signals. The spectral range of the data signals is located outside the amplification profile which can be used for typical operations, and is located inside a spectral range in which the refractive index of the switching device can be modulated by the control signals. In this manner, the data signals can be controlled with spectral proportional control signals which are remotely distanced from one another, for example, for carrying out time multiplex, time demultiplex or scanning operations in such a way that the data signals are not disturbed by the control pulses or by the optical components of the switching device which interact with said control pulses.

L'invention concerne un dispositif pour commuter et échantillonner des signaux de données optiques cadencés, notamment des signaux de données optiques numériques, selon un schéma de multiplexage temporel. Selon l'invention, il est prévu une unité de commutation optique (10, 20, 21) qui présente un profil d'amplification adapté au domaine spectral de signaux de commande. Le domaine spectral des signaux de données est situé à l'extérieur du profil d'amplification utilisable de façon caractéristique pour le fonctionnement et à l'intérieur d'un domaine spectral dans lequel l'indice de réfraction de l'unité de commande peut être modulé par les signaux de commande. Il est ainsi possible de commander au moyen de signaux de commande relativement éloignés les uns des autres dans le spectre, par exemple pour réaliser des opérations de multiplexage temporel, de démultiplexage temporel ou d'échantillonnage, sans que les signaux de données ne soient perturbés par les impulsions de commande ni par les composants optiques de l'unité de commutation interagissant avec lesdites impulsions.

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