Coupled communications fibers

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said device further comprising a coupling link fiber positioned for resonant lateral coupling to each of said cores and including a link core and a link cladding.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first fiber optic transmission element, a second fiber optic transmission element, each fiber optic transmission element including a core of relatively high index of refraction and a cladding of relatively low index of refraction, and means for coupling light intelligence from said first element to said second element, said first element including a cladding of generally annular shape whose material has been removed between its core and the periphery of said cladding, said device further comprising a coupling link fiber positioned for lateral coupling to each of said cores and including a link core and a link cladding and said coupling link fiber being shaped for insertion to the void left by said removed portion of said cladding of said first element and the core of said link fiber being positioned relatively close to the periphery of its cladding so that it is proximate to the core of said first element.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said first element including a cladding of generally annular shape whose material has been removed between its core and the periphery of said cladding for lateral coupling, said second element likewise including a cladding of generally annular shape whose material has been removed between its core and the periphery of its cladding, said second element abutting said first element to cause a unitary propagation direction therebetween and a key inserted to the voids left by removed material from the cladding of said first and second elements to align the cores of said first and second elements.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said first element including a cladding of generally annular shape whose material has been removed between its core and the periphery of said cladding for lateral coupling, said second element likewise including a cladding of generally annular shape whose material has been removed between its core and the periphery of its cladding, said second element abutting said first element to cause a unitary propagation direction there-between and a fixture inserted to the voids left by removed material from the cladding of said first and second elements to align the cores of said first and second elements.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said first element further comprising a coupling core separated from said core of said first element to provide a double transfer from one core to the other and then to the third core, said first element further comprising a thin fin optically connecting said cores of said first element and of an index of refraction higher than the index of refraction of said cladding of said first element.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first fiber optic transmission element, a second fiber optic transmission element, each fiber optic transmission element including a core of relatively high index of refraction and a cladding of relatively low index of refraction, and means for coupling light intelligence from said first element to said second element, the claddings of said first and second elements each defining a region proximate the peripheries thereof which are ion-exchanged to increase index of refraction to a level similar to that of said cores of said first and second elements proximate the point where said elements are coupled.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first fiber optic transmission element, a second fiber optic transmission element, each fiber optic transmission element including a core of relatively high index of refraction and a cladding of relatively low index of refraction, and means for coupling light intelligence from said first element to said second element, wherein a lower fixture is provided with a trough into which said elements are placed for coupling, a coupling core region being provided in the trough, and imbedded therein, said coupling core region having an index of refraction higher than that of the claddings of said elements and said elements each including a second core positioned proximate said coupling core region when said elements are inserted to said trough.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first fiber optic transmission element, a second fiber optic transmission element, each fiber optic transmission element including a core of relatively high index of refraction and a cladding of relatively low index of refraction, and means for coupling light intelligence from said first element to said second element, said device further comprising a coupling block upon which said elements rest, said elements each including a second core of higher index of refraction than the claddings of said elements and said coupling block includes a coupling core positioned adjacent to said second cores.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said first fiber optic transmission element comprising a plurality of cores separated by regions of lower index of refraction than said cladding, said first fiber optic transmission element further comprising an auxiliary core into which a single signal transmitted through said plurality of cores is transferred for coupling to said second fiber optic transmission element.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said device further comprising a third elment having a core and cladding, said device coupling transmitted light from said first element to both said second and third elements and said first element comprising second and third cores of generally similar index of refraction and cross-sectional area to said core of said first element, said second and third cores having propagation constants different from that of said core of said first element, means being included for altering the propagation constant of at least one of said cores for purposes of tuning to accomplish lateral coupling.

A coupling device for coupling light intelligence between fiber optic elements, comprising a first elongated fiber optic transmission element, a second elongated fiber optic transmission element, each fiber optic transmission element having ends, being single mode and including a core of relatively high index of refraction and a cladding of relatively low index of refraction and means for evanescent wave coupling of light intelligence from said first element to said second element, said device further comprising a third element having a core and a cladding, one or more of said elements having an additional core, said device establishing light coupling between said first element and said second element and between said first element and said third elment, said first element transmitting some of its propagated light to said second element at a first coupling point and then some of its remaining propagating light to said third element, coupling of transmissions being provided by means of lateral coupling, said first element including a second core, propagated light being transferred to said second core by means of tuning prior to coupling the transmission to said second and third elements.

An elongated fiber optics device comprising a core of relatively high index of refraction, a cladding of relatively low index of refraction and a longitudinal aperture, wherein said aperture is of a cross-sectional dimension larger than that of said core and said core is located, cross-sectionally, proximate to said aperture for purposes of coupling light propagated within said core, and said device further comprising a second core of an index of refraction higher than that of said cladding.

A coupling means for coupling light intelligence to an elongated fiber optic transmission element, comprising an elongated fiber optic transmission device having ends, being single mode, being rotationally non-symmetric to provide means for enhanced, efficient, evanescent wave coupling in a selected portion of the periphery thereof to couple light intelligence from said device to said element and including a core of relatively high index of refraction and a cladding of relatively low index of refraction, said core being proximate to only a portion of the outer periphery of said cladding and substantially smaller, cross-sectionally, than said cladding.

A fiber optics device comprising a pair of single mode cores of relatively high indices of refraction, a cladding of relatively low index of refraction and a fin extending cross-sectionally between said cores for providing interaction between said cores.

A fiber optics device comprising a core of relatively high index of refraction, a cladding of relatively low index of refraction, said cladding including a portion whose index of refraction is increasable by ion-exchange to form a region of coupling and to provide a second core, a fin being provided between said core and said portion for cross-sectionally coupling light therebetween.