Negative trimming of fiber optic winding

Details Negative trimming of fiber optic winding Negative trimming of fiber optic winding

G - Physics

01

C

G01C 19/72 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2236884

In a fiber optic coil arrangement for use in rotation sensors, for example, axial or radial errors can be reduced or substantially eliminated by negatively trimming the fiber optic coil. As a result of the negative trimming, a sufficient amount of the predictable truns of the optical fiber is removed from the fiber optic coil so as to interrupt the predetermined pattern with which the fiber optic coil is wound in order to thereby reduce axial or radial related errors which would have otherwise resulted. Alternatively, the fiber optic coil may be negatively trimmed by terminating winding of the fiber optic coil before the predetermined pattern of the fiber optic coil has been completed. The point at which winding is terminated may be selected so as to reduce axial or radial related errors to a desired level.

Dans un bobinage à fibres optiques destiné par exemple aux capteurs rotatoires, il est possible de réduire ou d'éliminer sensiblement les erreurs axiales ou radiales en effectuant un raccourcissement négatif de la configuration ce qui, après retrait d'une quantité suffisante de boucles spécifiques de la fibre optique dans l'enroulement, permet d'interrompre la continuité prédéterminée d'enroulement de la fibre optique et, partant, de réduire les erreurs axiales ou radiales intrinsèquement liées à cet enroulement. Une autre solution consiste à effectuer le raccourcissement négatif de l'enroulement en interrompant le bobinage de la fibre optique avant d'avoir atteint la continuité prédéterminée pour l'enroulement considéré. Le point d'interruption du bobinage peut être établi en vue de ramener les erreurs axiales ou radiales à un seuil spécifié.

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