Abstract: An optical communication cable is provided. The optical communication cable includes a cable jacket and a plurality of optical fiber subunits surrounded by the cable jacket. Each optical fiber subunit includes a subunit jacket and a plurality of optical fibers located within the subunit passage. Each optical fiber includes an outer polymer buffer coating, such as a tight buffer coating. The outer cable jacket and/or the outer polymer buffer coating of the optical fibers is formed from a halogen containing polymer material including a fire retardant material, and the subunit jacket is formed from a polyolefin polymer material including a fire retardant material.

Abstract: Fiber optic bundles include helically stranded subunit cables. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. Binders can be omitted to improve ease of processing and installation. Helically stranding of the subunit cables allows ease of access to the individual cables during installation.

Abstract: An optical communication cable bundle is provided. The cable bundle includes a bundle jacket having an inner surface defining a bundle passage and an outer surface defining an exterior surface of the cable bundle, and a plurality of optical fiber subunits located within the bundle passage and surrounded by the bundle jacket, each optical fiber subunit having a subunit jacket defining a subunit passage and a plurality of optical fibers located with the subunit passage. A thickness of the bundle jacket is less than a thickness of each of the subunit jackets and the bundle jacket is extruded tight around the subunit jackets to couple the subunits and the bundle jacket.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable laver. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: An optical communication cable bundle is provided. The cable bundle includes a bundle jacket having an inner surface defining a bundle passage and an outer surface defining an exterior surface of the cable bundle, and a plurality of optical fiber subunits located within the bundle passage and surrounded by the bundle jacket, each optical fiber subunit having a subunit jacket defining a subunit passage and a plurality of optical fibers located with the subunit passage. A thickness of the bundle jacket is less than a thickness of each of the subunit jackets and the bundle jacket is extruded tight around the subunit jackets to couple the subunits and the bundle jacket.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable layer. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable layer. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: A rugged optical micromodule cable is provided. The cable includes a composite cable jacket including a first cable jacket layer formed from a first material and a second cable jacket layer formed from a second material. The first cable jacket layer provides at least 10% of the thickness of the cable jacket and the second cable jacket layer provides at least 10% of the thickness of the cable jacket. The first material is different than the second material, and each material provides different physical properties to the cable jacket.

Abstract: An optical communication cable bundle is provided. The cable bundle includes a bundle jacket having an inner surface defining a bundle passage and an outer surface defining an exterior surface of the cable bundle, and a plurality of optical fiber subunits located within the bundle passage and surrounded by the bundle jacket, each optical fiber subunit having a subunit jacket defining a subunit passage and a plurality of optical fibers located with the subunit passage. A thickness of the bundle jacket is less than a thickness of each of the subunit jackets and the bundle jacket is extruded tight around the subunit jackets to couple the subunits and the bundle jacket.

Abstract: A rugged micromodule cable includes central strength yarns, micromodules stranded around the central strength yarns, additional strength yarns positioned around the stranded micromodules, and a jacket of polymeric material surrounding the additional strength yarns. The micromodules each include sheathing surrounding a plurality of optical fibers. The strand profile of the micromodules is tight, having an average lay length of less than 250 mm, and the sheathing is thin-walled, having an average thickness of less than about 200 micrometers. The strand of the micromodules, the positioning of the additional strength yarns, and bonding between the additional strength yarns and the jacket mitigate lengthwise movement of the optical fibers in the rugged micromodule cable.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable layer. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: An optical communication cable bundle is provided. The bundle includes a bundle jacket and a plurality of optical fiber subunits surrounded by the bundle jacket. Each optical fiber subunit includes a subunit jacket defining a subunit passage and a plurality of optical fibers located with the subunit passage. The thickness of the bundle jacket may be less than a thickness of each of the subunit jackets. The tensile strength of the bundle jacket may be less than the tensile strength of the subunit jacket, and the tear strength of the outermost bundle layer may be less than the tear strength of the subunit jacket. The subunit jacket may be formed from a fire resistant material that has an oxygen limiting index that is greater than an oxygen limiting index of the material of the bundle jacket.

Abstract: An optical communication cable is provided. The optical communication cable includes an outer cable layer and a plurality of optical fiber bundles surrounded by the outer cable layer. Each optical fiber bundle includes a bundle jacket surrounding a plurality of optical fiber subunits located within the bundle passage. The plurality of optical subunits are wrapped around each other within the bundle passage forming a wrapped pattern. Each optical fiber subunit includes a subunit jacket surrounding a elongate optical fiber located within the subunit passage. The cable jacket, bundle jacket and subunit jacket may be fire resistant, and strength strands of differing lengths may be located in the bundles and the subunits.

Abstract: A rugged optical micromodule cable is provided. The cable includes a composite cable jacket including a first cable jacket layer formed from a first material and a second cable jacket layer formed from a second material. The first cable jacket layer provides at least 10% of the thickness of the cable jacket and the second cable jacket layer provides at least 10% of the thickness of the cable jacket. The first material is different than the second material, and each material provides different physical properties to the cable jacket.

Abstract: A rugged micromodule cable includes central strength yarns, micromodules stranded around the central strength yarns, additional strength yarns positioned around the stranded micromodules, and a jacket of polymeric material surrounding the additional strength yarns. The micromodules each include sheathing surrounding a plurality of optical fibers. The strand profile of the micromodules is tight, having an average lay length of less than 250 mm, and the sheathing is thin-walled, having an average thickness of less than about 200 micrometers. The strand of the micromodules, the positioning of the additional strength yarns, and bonding between the additional strength yarns and the jacket mitigate lengthwise movement of the optical fibers in the rugged micromodule cable.