Method for polishing fiber optic ferrules

G - Physics – 02 – B

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G02B 6/38 (2006.01) B24B 19/22 (2006.01)

Patent

CA 2161801

A method of polishing ferrules used in optical fiber connectors centers the apex of the spherical end face of the ferrule on the fiber axis. The invention is directed to ferrules whose ends are angled and generally spherical, providing angled physical contact (APC) between a pair of interconnected fibers. These ferrules commonly have a chamfer from the outermost diameter leading to the spherical, angled end face. In such prior art ferrules, the apex of the spherical end face does not coincide with the fiber axis, leading to a potential gap between the fiber ends which affects several performance factors, including insertion loss, stability and repeatability. The present invention provides several practical methods for imparting and APC finish to a chamfered ferrule while maintaining the apex of the spherical end face on the fiber axis.

L'invention concerne un procédé de polissage de ferrures annulaires utilisées dans des connecteurs de fibres optiques et de centrage l'apex de la face terminale sphérique de la ferrure sur l'axe de la fibre. L'invention concerne des ferrures dont les extrémités sont angulaires et généralement sphériques, assurant un contact physique angulaire (CPA) entre une paire de fibres interconnectées. Ces ferrures possèdent communément un chanfrein partant du diamètre le plus extérieur et allant jusqu'à la face terminale angulaire, sphérique. Dans les ferrures de la technique antérieure, l'apex de la face terminale sphérique ne coïncide pas avec l'axe de la fibre, conduisant à un intervalle potentiel situé entre les extrémités des fibres, et qui touche plusieurs facteurs d'exécution, y compris la faiblesse d'insertion, la stabilité et la répétabilité. La présente invention concerne plusieurs procédés pratiques visant à donner un polissage CPA à une ferrure chanfreinée tout en maintenant l'apex de la face terminale sphérique sur l'axe de la fibre.

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