# US 5,351,329 A · Method and apparatus for affixing an optic fiber tip in position with respect to a fiber communications circuit outside an optics package > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,351,329 A - Document ID: US5351329A - Status: Granted - Kind: A - Application number: 07/994,709 - Filed: 1992-12-22 - Granted: 1994-09-27 - Earliest claimed: 1992-12-22 - Assignees: Alcatel Network Systems, Inc. - Inventors: Andrew J. Moore; David L. Ma; Robert L. Bontz; Charles C. Burns - Web page: https://patentgrep.com/patent/US5351329A ## CPC - G02B 6/4202: {for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles} - G02B 6/4238: {Soldering} - G02B 6/4248: {Feed-through connections for the hermetical passage of fibres through a package wall (see provisionally also G02B6/4428)} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract In one embodiment, the present invention includes a method of installing an optic fiber in an optics package, wherein the tip of the fiber extends from a sleeve. In one step, a point of the fiber proximate its tip is affixed in a retaining member adjacent a device for communicating signals through the fiber. In a second step, a flexible member is disposed between the retaining member and the sleeve and in axial alignment with the fiber. In a third step, the optic fiber is positioned in the optics package after the step of affixing the fiber in place with the respect to the communicating device. In another embodiment, the present invention includes an optics assembly including an optic fiber having a tip extending from a sleeve and a device for communicating signals through the fiber. The assembly further includes a retaining member for affixing the fiber tip proximate the device for communicating signals through the fiber. Finally, the assembly includes a flexible member attached between the retaining member and the sleeve. ## Claims ### Claim 1 A method of installing an optic fiber in an optics package, wherein said fiber has a tip extending from a sleeve, comprising the steps of: affixing a point of said fiber proximate said fiber tip in a retaining member adjacent a device for communicating signals through said fiber; connecting a first point of a flexible member to said retaining member and a second point of said flexible member to said sleeve, such that said flexible member is parallel to said fiber and in axial alignment with said fiber, said flexible member having a selective flexibility between said first and second points; and positioning said fiber tip, said flexible member and said device for communicating signals in said optics package after said affixing step such that said flexible member selectively flexes at a flex point between said first and second points causing a corresponding flex along said fiber between said retaining member and said sleeve proximate said flex point of said flexible member. ### Claim 2 (depends on 1) The method of claim 1 wherein said sleeve comprises a cylindrical length and a bead at its end, and wherein said step of disposing a flexible member comprises attaching an end of said flexible member to said cylindrical length. ### Claim 3 A method of installing an optic fiber in position with respect to a device for communicating signals through said fiber, wherein said fiber extends from a sleeve and has a tip, comprising the steps of: affixing a first end of a flexible member to said sleeve and in axial alignment with said fiber; affixing said optic fiber to a retaining member at a position proximate said fiber tip such that said tip is fixed in position with respect to said device for communicating signals through said fiber; affixing a second end of said flexible member to said retaining member; and wherein said flexible member is selectively flexible between said first and second ends. ### Claim 4 (depends on 3) The method of claim 3 and further comprising the step of positioning said fiber, said flexible member and said retaining member in an optics package after said step of affixing said flexible member to said retaining member, wherein said flexible member selectively flexes between said first and second ends during said positioning step. ### Claim 5 An optics assembly, comprising: an optic fiber having a tip extending from a sleeve; a device for communicating signals through said fiber; a retaining member for affixing said tip proximate said device for communicating signals; and a flexible member attached between said retaining member and said sleeve, said flexible member having the capability to selectively bend when said optics assembly is positioned in an optics package, wherein said flexible member comprises a length and a first and second end, and wherein said flexible member is more likely to flex at a point between said first and second ends in response to a bending force applied between said first and second ends. ### Claim 6 (depends on 5) The optics assembly of claim 5 wherein said flexible member has a first and second end and wherein said sleeve comprises a cylinder having a diameter and a bead at one end, wherein said first end of said flexible member is attached to said cylinder. ### Claim 7 (depends on 5) The optics assembly of claim 5 wherein said flexible member comprises a metallic length and a first and second end, and wherein said flexible member is thinner at a point between said first and second ends than at either of said first and second ends. ### Claim 8 (depends on 5) The optics assembly of claim 5 wherein said flexible member comprises a coil spring. ### Claim 9 (depends on 5) The optics assembly of claim 5 wherein said flexible member comprises a plastic tube. ### Claim 10 An optics assembly, comprising: an optic fiber having a tip extending from a sleeve, wherein said sleeve comprises a cylinder having a diameter and a bead at one end; a device for communicating signals through said fiber; a retaining member for affixing said tip proximate said device for communicating signals; and a flexible member having a first and second end and attached between said retaining member and said sleeve, wherein said first end of said flexible member is attached to said bead such that said diameter of said cylinder is unaffected by said attachment of said flexible member to said cylinder, and wherein said flexible member is more likely to flex at a point between said first and second ends than at either of said first and second ends in response to a bending force applied between said first and second ends. ### Claim 11 A method of minimizing breakage of an optic fiber extending from its protective sleeve and attached at an end thereof to further apparatus comprising the step of: disposing a flexible member, having first and second ends, between said further apparatus and said protective sleeve wherein points intermediate said first and second ends are more flexible than points near said first and second ends to reduce bending stresses on said optic fiber in the vicinity of said sleeve and said further apparatus. ### Claim 12 A method of minimizing inventory of fiber optic communication packages, comprising the steps of: attaching alignable support apparatus to an end of an optic fiber remote from protective sleeving thereof to facilitate alignment processes during assembly; and interposing a flexible member between said support apparatus and said protective sleeve to reduce bending stresses on said optic fiber in the vicinity of said sleeve and said support apparatus. ### Claim 13 A method of installing an optic fiber in an optics package, wherein said fiber has a tip extending from a sleeve, comprising the steps of: affixing a point of said fiber proximate said fiber tip in a retaining member adjacent a device for communicating signals through said fiber; disposing a flexible member between said retaining member and said sleeve and in axial alignment with said fiber, said flexible member having a geometry which reduces bending stresses on said fiber at points proximate said retaining member and said sleeve; and positioning said fiber tip and said device for communicating signals in said optics package after said affixing step.