1, outdoor optical cable Mainly central tube optical cable, layer twisted optical cable and skeleton optical cable three kinds of structure, according to the use of fiber bundles and fiber optic cable can be divided into ordinary optical cable and optical fiber with optical cable and other six types The The structural features of each optical cable:

(1) central tube optical cable (implementation standard: YD / T769-2003): optical cable center for the loose tube, reinforced components located in the loose tube around the optical cable structure type, such as the common GYXTW type optical cable and GYXTW53 type Optical cable, optical cable The number of cores is small, usually 12 cores or less.

(2) layer optical cable (executive standard: YD / T901-2001): reinforcement components in the center of the optical cable, 5 to 12 loose tube twisted in the way of twisting on the core reinforcement, twisted Usually SZ stranded. Such as optical cable such as GYTS, etc., through the combination of loose tube can be a larger number of optical cable. The dichroic layer of the strand is usually colored with red and green lips for distinguishing between different loose sleeves and different fibers. The number of optical cable cores can be larger. At present, the number of optical cable cores is up to 216 cores or higher.

(3) skeleton optical cable: the reinforcing member is located in the center of the optical cable. The skeleton groove, the optical fiber or the optical fiber belt, is composed of plastic on the reinforcing member. The optical fiber or the optical fiber belt is not easily compressed. The optical cable has good compression Flat performance. The kind of structure optical cable in the country is rare, the proportion of smaller.

(4) 8-shaped self-supporting structure, the kind of structure optical cable can be incorporated into the central tube and layer twisted optical cable, it is listed separately because the optical cable structure with other optical cable have a larger different. Usually with central tube and layer twisted 8-shaped self-supporting optical cable.

(5) coal mine flame retardant optical cable (executive standard: Q / M01-2004 enterprise standard): compared with ordinary optical cable to improve the optical cable flame retardant performance requirements, and through a special design to make optical cable for mine Environment, usually outside the jacket color with blue, in order to facilitate the recognition of the optical cable in the mine. According to the structure can be divided into the central tube optical cable and layer twisted optical cable two types of structure.

2, indoor optical cable

Indoor optical cable according to the number of optical fiber core, mainly single-core, dual-core and multi-core optical cable. Indoor optical cable mainly by the tight set of fiber, polyester and PVC outer jacket composition. According to the type of fiber can be divided into two types of single-mode and multi-mode, single-mode indoor cable is usually outside the jacket color is yellow, multi-mode indoor cable is usually outside the jacket color is orange, and some indoor cable outer jacket color gray.

The above is a brief description of the structure of the optical cable, learn more about the contents of the optical cable, please pay attention to kingsignal official website.