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Patent
Title
Repeater fuer aus Monomode- oder Multimode-Lichtleitfasern aufgebaute Uebertragungsstrecken
Other Title
Optical fibre coupling esp. for repeaters - abuts monomode and gradient fibres for undirectional transmission by matching refractive indices of cores.
Abstract
DE 2611011 C UPAB: 19930901 An optical coupling device is for use in communications equipment, in optical repeaters. For coupling in one direction an arrangement of monomode fibres and gradient fibres is used, with one end of the monomode fibre abutting one end of the gradient fibres. The fibres are so adjusted that the core of the monomode fibre meets a point on the core of the gradient fibre at which the refractive index of the core of each fibre is the same. The fibres are fixed in this relative position, in which the losses are a min. for the direction of transmission, but very great for transmission in the reverse direction. To suppress mantle waves, iris diaphragms may be fitted to one or both ends of the fibres.
Inventor(s)
Matt, H.J.
Fussgaenger, K.
Patent Number
1976-2611011
Publication Date
1977
Language
German