Methods for terminating optical fiber cables
View Patent ↗A fiber optic cable system includes a fiber optic main cable having a strength member and a plurality of optical fibers extending therein within an outer cable sheath. A flexible longitudinally extending inner housing is positioned proximate the plurality of optical fibers on a section of the main cable having the outer cable sheath removed. At least one fiber optic drop cable has at least one optical fiber having an end portion extending outwardly from an end of the drop cable. The end portion is spliced together with an end portion of a corresponding at least one severed end portion of one of the plurality of optical fibers of the main cable to define at least one spliced together fiber portion coupling at least one of the plurality of optical fibers of the main cable to a corresponding one of the at least one fiber of the drop cable. A longitudinally extending outer protective housing extends over the section of the main cable having the outer cable sheath removed and the inner housing and the strength member. The outer protective housing has a first opening receiving the main cable and a second opening, longitudinally displaced from the first opening, receiving the main cable and at least one of the openings receiving the drop cable or cables.
1. A method of factory terminating an optical fiber cable, comprising:
determining a number of longitudinally offset predetermined termination points to be provided on the optical fiber cable, wherein the number is greater than one;
sliding a number of tubular outer protective housings onto the optical fiber cable over a first end of the optical fiber cable, wherein the number of tubular outer protective housings is at least equal to the number of termination points;
removing the outer cable sheath from a section of the optical fiber cable corresponding to a first of the termination points to expose a portion of a fiber protection tube of the optical fiber cable;
removing a length of the exposed fiber protection tube to expose a plurality of optical fibers of the optical fiber cable;
severing an exposed one of the plurality of optical fibers;
splicing the severed optical fiber of the optical fiber cable to an optical fiber of another optical fiber cable to provide a splice;
sliding one of the tubular outer protective housings over the section of the optical fiber cable having the outer cable sheath removed; and
securing the outer protective housing to the optical fiber cable to provide an environmental closure around the section of the optical fiber cable with the optical fiber cable extending from respective longitudinally displaced ends of the outer protective housing and the another optical fiber cable extending from at least one of the ends of the outer protective housing.
2. The method of claim 1 , wherein splicing the severed optical fiber is followed by:
positioning the splice in a location proximate the removed length of the exposed fiber protection tube;
positioning an inner housing proximate and covering the exposed plurality of optical fibers of the optical fiber cable and the splice;
securing longitudinally displaced ends of the positioned inner housing to respective un-removed exposed portions of the fiber protection tube extending from the optical fiber cable adjacent the section of the optical fiber cable having the outer cable sheath removed; and
repeating removing the outer cable sheath, removing a length of the exposed central core tube, severing an exposed one of the plurality of optical fibers, splicing the severed optical fiber, splicing the severed optical fiber, positioning the splice, positioning the inner housing, securing longitudinally displaced ends, sliding one of the tubular outer protective housings and securing the outer protective housing at additional ones of the predetermined termination points with an inner housing therein to splice additional optical fiber cables to the optical fiber cable.
3. The method of claim 2 , wherein positioning the inner housing comprises positioning the inner housing around the exposed plurality of optical fibers of the optical fiber cable and the splice and between the plurality of optical fibers and the splice and an exposed strength member of the optical fiber cable.
4. The method of claim 1 , wherein sliding one of the tubular outer protective housings is preceded by:
positioning an inner housing covering the exposed plurality of optical fibers of the optical fiber cable and the splice; and
positioning an inner liner around the inner housing and between the inner housing and an exposed strength member of the optical fiber cable.
5. The method of claim 1 , wherein the outer protective housing comprises heatshrink and wherein securing the outer protective housing comprises heating the heatshrink.