Apparatus and methods for furcating fiber optic cables
View Patent ↗Methods and apparatus for furcating fiber optic cables are provided. In some embodiments, a molded array of furcation tubes is generated by compressing rearward portions of a plurality of furcation tubes together and heating at least a portion of the rearward portions to form a molded portion of the molded array. Reinforcing filaments can be bonded into and/or throughout the molded portion. The molded portion can have a plurality of internal chambers, each in communication with a separate furcation tube of the molded array, in which optic fibers can be slidably retained. The molded portion can be fixedly coupled to a housing, which in turn, can be coupled to a cable trunkline. Optic fibers can slide longitudinally within the trunkline, housing, and molded portion.
1. A cable furcation assembly, comprising:
a trunkline;
a housing; and
a plurality of optic fibers extending from the trunkline, through the housing, and into a heat molded array of furcation tubes, wherein reinforcing filaments in at least a portion of the heat molded array are bonded into tubes jackets, and wherein the trunkline and heat molded array are each fixedly coupled to the housing, and wherein the plurality of optic fibers are slidably retained within the trunkline, housing, and heat molded array.
2. The cable furcation assembly of claim 1 wherein the heat molded array includes a molded portion and an unmolded portion, and wherein the molded portion is coupled to the housing and the unmolded portion extends forward from the housing as separate unmolded furcation tubes.
3. The cable furcation assembly of claim 2 wherein the molded portion is at least partially disposed within a chamber of the housing.
4. The cable furcation assembly of claim 3 wherein the molded portion is coupled to an internal sidewall of the housing by an adhesive.
5. The cable furcation assembly of claim 3 , wherein the trunkline is coupled to the housing by a crimp ring that crimps at least a plurality of reinforcing filaments of the trunkline against a portion of the housing.
6. A molded furcation tube assembly comprising:
a plurality of furcation tubes heat molded together at rearward portions thereof to form a molded portion, the molded portion having an entrance opening and internal chamber corresponding to each of the plurality of furcation tubes; and
a rigid housing fixedly connected to an exterior surface of the molded portion.
7. The molded furcation tube assembly of claim 6 further comprising reinforcing filaments molded into the molded portion.
8. The molded furcation tube assembly of claim 7 further comprising an unmolded portion of the plurality of furcation tubes, the unmolded portion being integral with the molded portion and forward from the molded portion, and the reinforcing filaments also extending from the molded portion into the unmolded portion.
9. A method of constructing a fiber optic cable assembly comprising:
bonding reinforcing fibers in a furcation tube to a tube jacket of the furcation tube by deforming the tube jacket;
pulling an optic fiber from a bundled cable through an opening in a rigid housing;
threading the optic fiber through the deformed tube jacket; and
fixedly coupling the deformed tube jacket to the rigid housing.
10. The method of claim 9 wherein deforming the tube jacket comprises heating the tube jacket.
11. The method of claim 10 further comprising inserting a pin into the tube jacket before heating the tube jacket.
12. The method of claim 10 further comprising compressing the tube jacket against a plurality of other furcation tube jackets while heating the tube jacket.
13. The method of claim 12 wherein the tube jacket is bonded to the plurality of other furcation tube jackets during heating.