What types of 8-core multimode optical cables are commonly used? What are the types of multimode optical fiber jumpers, which are generally divided by connectors. The conventional ones are SC, FC, LC, ST, and MPO. According to the type of fiber core, it can be divided into single-mode, multi-mode, dual-core, single-core, Gigabit, 10 Gigabit, etc.
Multimode fiber jumper points: SC FC ST LC MTRJ SC and LC are square heads (SC is a large square head, LC is a small square head) FC and ST are round heads, according to the structure of the connector can be divided into: FC jumper , SC jumper, ST jumper, LC jumper, MTRJ jumper, MPO jumper, MU jumper, SMA jumper, FDDI jumper, E2000 jumper, DIN4 jumper, D4 jumper and so on various forms. The more common fiber optic jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, SC-ST, etc.
Multi-mode fiber (MulTI-mode Fiber): Generally, fiber optic jumpers are represented by orange, and some are represented by gray, and the connectors and protective sleeves are beige or black; the transmission distance is short.
What are the commonly used models of 8-core multimode optical cables?
The 8-core optical cable is a communication cable with 8 optical fibers (composition of silica, quartz glass) built in. With a variety of structural models and two transmission modes, it is a widely used communication optical cable.
In terms of model selection, the 8-core optical cable mainly has two types of outdoor and indoor models. The outdoor models include GYXTW, GYTS, GYTA, and GYTA53; the indoor models include GJFJV.
1. GYXTW: central beam tube type armored structure, can accommodate 4-12 cores, suitable for overhead laying.
2. GYTS: Layer stranded armored structure, can accommodate 4-144 cores, suitable for buried and pipeline laying. (It needs to be covered with a layer of PVC pipe when buried)
3. GYTA: Layer stranded aluminum structure, can accommodate 4-144 cores, suitable for buried and pipeline laying. (It needs to be covered with a layer of PVC pipe when buried)
The nominal diameter of the core wire of the multimode fiber is 62.5μm/125μm. or 50μm/125μm. Specifications (number of cores) include 2, 4, 6, 8, 12, 16, 20, 24, 36, 48, 60, 72, 84, 96 cores, etc. The outer sheath material of the cable has ordinary type; ordinary flame retardancy; low-smoke halogen-free type; low-smoke halogen-free flame-retardant type.
Multimode fiber optic cable selection:
In addition to the number of optical fiber cores and types of optical fibers, the selection of optical cables also requires the outer sheath of the optical cable to be selected according to the use environment of the optical cable. The application of optical fiber networks is very common. We must select optical cables with reasonable structures according to the requirements of specific construction conditions.
If the optical cable is to be buried directly without passing through the pipe, or overhead or buried through the pipe, then it is necessary to choose a different structure of the optical cable. The armored optical cable commonly used for overhead and pipe penetration generally uses GYXTW central beam tube armored optical fiber cable or GYTA loose Sheath stranded armored optical fiber cable, GYTS layered armored optical cable, etc. Metal heavy armored optical cable for direct burial is generally layered structure such as: GYTA53 loose sleeve layered reinforced core armored cable, GYTY53 single armored double Sheathed direct burial optical cable.
The optical cables used in electric power and industrial control fields use non-metallic optical cables such as: ADSS power optical cables, DCHTY loose-tube layer twisted non-metallic reinforced core optical cables, and the following different modes of optical fibers can be selected according to different optical fiber lengths and network bandwidth requirements. Multi-mode 62 .5/125 core diameter gigabit length does not exceed 275 meters, 50.5/125 core diameter gigabit length does not exceed 550 meters, single-mode 9/125 core diameter gigabit length is unlimited.
Multimode cables carry multiple modes of fiber at a given operating wavelength. According to the distribution of its refractive index, it can be divided into sudden type and gradual type. The numerical aperture of ordinary multimode fiber is 0.2±0.02, the core diameter/outer diameter is 50μm/125μnu, and its transmission parameters are bandwidth and loss.
