Archived — Fiber Optic Cable

1. General 1.1 This procedure describes the recommended installation procedure for Corning Cable Systems Spider Fan-Out Kits (Plus) for non-armored cables containing up to 24 fibers (Figure 1). Fan-Outs permit the branching of fibers contained in an optical cable into individual cables, which can then be connectorized or terminated per system interface requirements. 1.2 Two sizes of Spider Fan-Out kits are available for MIC® cables; one unit accommodates 4 to 12 fibers, a larger unit has a 14 – 24 fiber capacity. The larger Fan-Out body is also used for all loose tube cable applications. Both units are available in

Since the past several years, the fiber optic industry has been rapidly shifting from traditional single-mode fibers to new "Full Spectrum" single-mode fibers meeting the International Telecommunications Union (ITU-T) G.652D specification. :: Low water peak: standards definition The fiber optic industry has defined and established standards for water-peak performance of optical fiber in the latest single-mode standards, ITU-T G.652D, and IEC B1.3. Since 1310 nm attenuation is the transmission limiting wavelength of low or zero water peak fibers, as shown in the spectral attenuation plot in Figure 1, the standards require that the “water peak” attenuation at 1383 nm (after

National Electrical Code 2008 covers the grounding or interruption of non-current-carrying metallic members of optical fiber cables. The grounding rules are defined for outside or inside of a building. The main rule is defined in NEC section 770.100 – Entrance Cable Grounding. Entrance Cable Grounding Grounding conductor needs to be insulated, made of copper (or other corrosion resistant material), and stranded or solid. The size must be no smaller than 14 AWG and having an ampacity equal or larger than the conductive elements of the cable assembly, but it doesn’t need to be larger than 6 AWG. It must be

OK. Here is the point: fiber optic cables should be tested after shipping and handling. This is one of the most common mistakes made by fiber optic cable installers and contractors. Damage to cabling can occur during shipping or installation. Failing to test fiber cables after it is delivered is a common mistake made by installers. This failure makes damaged cable detection difficult and returns awkward. An OTDR could be used in this case to shoot an optical profile on each fiber after the cable is received and still on the shipping reel. A permanent record will then be available

Fiber optic cable is normally covered with a substantial outer plastic sheath in order to reduce abrasion and to provide the cable with extra protection against external mechanical effects such as crushing. The cable sheath is said to contain the cable core and may vary in complexity from a single extruded plastic jacket to a multilayer structure comprising two or more jackets with intermediate armoring. However, the plastic sheath material tends to give very limited protection against the penetration of water into the cable. Hence an additional water barrier is usually incorporated. This may take the form of an axially