Cables with bend insensitive optical fibers
AssigneeCorning Cable Systems LLC
InventorWilliam Carl Hurley
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Abstract
Fiber optic cables and methods of manufacturing fiber optic cables are disclosed herein. According to one embodiment, a fiber optic cable includes a plurality of optical fibers. The fiber optic cable also includes strength material having a relatively long lay length, the strength material surrounding the plurality of optical fibers and a polymer jacket surrounding the strength material. Each of the optical fibers is configured to exhibit a bend-induced optical attenuation of less than or equal to about 0.5 dB when wrapped one turn around a 10 mm mandrel at a wavelength of 850 nanometers.
Claims20
A fiber optic cable, comprising:
- a plurality of optical fibers;
- strength material surrounding the plurality of optical fibers having a lay length of the strength material that is greater than or equal to about 1000 mm;
- and
- a polymer jacket surrounding the strength material;
- wherein, when wrapped one turn around a 10 mm diameter mandrel, each of the optical fibers is configured to exhibit a bend-induced optical attenuation of less than 0.5 dB at an 850 nm wavelength.
A fiber optic cable, comprising:
- a plurality of tight-buffered optical fibers, wherein each optical fiber comprises a core and a cladding that surrounds and is directly adjacent to the core, wherein the cladding of each optical fiber is surrounded by at least one coating, wherein the coating is surrounded by the tight buffer, and wherein the tight buffer of each optical fiber includes polymeric material that extends substantially coaxially around and is fixedly connected to the corresponding optical fiber;
- strength material surrounding the plurality of tight-buffered optical fibers;
- and
- a polymer jacket surrounding the strength material having a lay length of the strength material that is greater than or equal to about 1000 mm;
- wherein, when wrapped one turn around a 10 mm diameter mandrel, each of the tight buffered optical fibers is configured to exhibit a bend-induced optical attenuation of less than 0.5 dB at an 850 nm wavelength.
A fiber optic cable, comprising:
- a plurality of tight-buffered optical fibers, wherein the tight buffer of each optical fiber is a substantially-cylindrical, outer layer of polymeric material that extends substantially coaxially around and is fixedly connected to the corresponding optical fiber, wherein
- a first group of the tight-buffered optical fibers resides within an inner layer and
- a second group of the tight-buffered optical fibers resides within an outer layer;
- and
- the first group is adjacent to the second group;
- strength material surrounding the plurality of tight-buffered optical fibers having a lay length of the strength material that is greater than or equal to about 1000 mm;
- and
- a polymer jacket surrounding the strength material;
- wherein, when wrapped one turn around a 10 mm diameter mandrel, each of the tight-buffered optical fibers is configured to exhibit a bend-induced optical attenuation of less than 0.5 dB at an 850 nm wavelength.
Dependencies are inferred from the claim text.