Abstract: A tube assembly of the present invention has at least one subunit with at least one dry insert generally surrounding the subunit which may be disposed within a tube, thereby forming a tube assembly. The subunit includes a fiber optic ribbon and a sheath, wherein the sheath is tight-buffered about the fiber optic ribbon, thereby inhibiting buckling of the ribbon during temperature variations. Additionally, the tube assembly can be a portion of a fiber optic cable having a sheath that may include a plurality of strength members and a cable jacket. In other embodiments, the subunits and dry insert are disposed within a cavity, thereby forming a tubeless cable. Additionally, subunits may include a marking indicia for denoting the security level.

Abstract: A tube assembly of the present invention has at least one subunit with at least one dry insert generally surrounding the subunit which may be disposed within a tube, thereby forming a tube assembly. The subunit includes a fiber optic ribbon and a sheath, wherein the sheath is tight-buffered about the fiber optic ribbon, thereby inhibiting buckling of the ribbon during temperature variations. Additionally, the tube assembly can be a portion of a fiber optic cable having a sheath that may include a plurality of strength members and a cable jacket. In other embodiments, the subunits and dry insert are disposed within a cavity, thereby forming a tubeless cable. Additionally, subunits may include a marking indicia for denoting the security level.

Abstract: A single-mode optical fiber includes a core, a cladding, and a coating. The cladding of the single-mode optical fiber has an outer diameter of about 125.0 &mgr;m±0.3 &mgr;m. A plurality of the single-mode optical fibers may be associated with at least one flexible polymeric material forming an fiber optic assembly and a method of manufacturing the same. The fiber optic assembly, for example, may be a ribbon, a cable, a pigtail, an optical circuit, or a portion of a ribbon stack. Additionally, the optical fiber may include other suitable geometric properties and/or characteristics, such as, a core to cladding concentricity of about 0.2 &mgr;m or less and/or a mode-field diameter of about 9.2 &mgr;m±0.3 &mgr;m at a source wavelength of 1310 nm.

Abstract: A single-mode optical fiber includes a core, a cladding, and a coating. The cladding of the single-mode optical fiber has an outer diameter of about 125.0 &mgr;m±0.3 &mgr;m. A plurality of the single-mode optical fibers may be associated with at least one flexible polymeric material forming an fiber optic assembly and a method of manufacturing the same. The fiber optic assembly, for example, may be a ribbon, a cable, a pigtail, an optical circuit, or a portion of a ribbon stack. Additionally, the optical fiber may include other suitable geometric properties and/or characteristics, such as, a core to cladding concentricity of about 0.2 &mgr;m or less and/or a mode-field diameter of about 9.2 &mgr;m±0.3 &mgr;m at a source wavelength of 1310 nm.