Method and device for extracting signals out of a glass fiber

Details Method and device for extracting signals out of a glass fiber Method and device for extracting signals out of a glass fiber

H - Electricity

04

B

H04B 10/06 (2006.01) G01D 5/353 (2006.01) G02B 6/28 (2006.01) G02B 6/42 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2250604

In a method and a device for extracting signals out of a glass fiber without anydetectable interference occurring, in particular without the signals propagatingthrough the glass fiber experiencing any transmission loss, light that emerges laterally from the glass fiber due to scattering (Rayleigh scattering) processes, which are in existence anyway, is directed at a photodetector. In the process, the emerging light can be directed by focussing elements at the photodetector or at the input face of another glass fiber. In addition, the emerging light can be directed both directly as well as via at least one reflector at the photodetector.

La présente invention a pour objet une méthode ainsi qu'un dispositif permettant d'extraire des signaux d'une fibre de verre composite sans aucune interférence détectable, notamment sans propagation et pertes des signaux à travers la fibre ou diffusion latérale de lumière (diffusion de Rayleigh), lesquelles préexistent de toute manière, lesquels sont destinés à un photodétecteur. Selon la méthode mise en oeuvre, la lumière émergente peut être focalisée en direction du photodétecteur ou à la face d'entrée d'une autre fibre de verre composite. En outre, la lumière émergente peut être dirigée vers le photodétecteur soit directement, soit indirectement par l'intermédiaire d'au moins un réflecteur.

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