Micro Fiber optic cable Wholesale

Fiber break, broken fiber is divided into two types: partial interruption and the entire optical cable interruptionPartial interrupts are of the following categories:The first reason is that the fiber core is interrupted due to external force extrusion or excessive bending.During the construction process of the optical cable, due to external force extrusion or too small bending radius, some fiber cores of the optical cable are interrupted, which is more common. It is also a kind of soft fault, which is very difficult to find and deal with.The second is that the joint box is damaged and interrupted due to water ingress.Fiber core damage and interruption caused by water ingress into the splice box at the optical fiber fusion point is the most common fault for partial fiber core interruption of the optical cable. Water molecules invade the splice box, pass through the gap of the heat shrink tube and finally reach the fusion point of the optical fiber fusion core. Water molecules will enter into the bond chains of silica molecules in the glass fiber core, and eventually undo the bond chains of the silicon-oxygen tetrahedron, resulting in light decay or fiber breakage at the joint. This fault is also the most common fault phenomenon of partial fiber core interruption of the optical cable. This kind of fault is also a soft fault, and it is also very difficult to find and deal with.The third is the interruption of the fiber core caused by animal bites.Communication optical cables buried underground are extremely easy to be bitten by rodents, and overhead optical cables are also easy to be pecked by woodpeckers, causing partial core interruptions. Due to the small damage to the optical fiber, such faults are also very difficult to deal with.The fourth is external construction, accidentally touching the optical cable, causing partial interruption.Whether it is an optical cable buried underground or an overhead optical cable, it is often hit by a third-party construction work or a tall vehicle, accidentally touching the optical cable, causing the damaged part of the optical fiber core to be interrupted. This failure is relatively easy. To deal with it, you only need to check section by section along the optical cable path, and you can basically determine the location of the fault if you see the construction vehicles or the traces left after construction.The fifth is that the traction tension of the optical cable is too large. Causes partial fiber core interruption.The span of the overhead optical cable is too large, or a vehicle scratches the optical cable, and the gradual change of the buried optical cable due to the geological landslide may also cause the traction tension of the optical cable to be too large, which may eventually damage the optical fiber core and cause some core interruptions. This type of fault is relatively easy to observe changes, and the damage to the optical cable is more obvious, and it is also a relatively easy-to-handle optical cable fault.Fiber hope fiber optic cable and patch cord manufacturers can provide high-quality fiber optic cables,fiber pigtails, fiber patch cords, single-mode multi-mode fiber, welcome to inquiry!

The first category is the optical attenuation caused by the too small bending radius of the optical cable.Because the fiber is sensitive to stress, bending the fiber has the potential to cause light signals to escape through the fiber cladding, and as the bend becomes sharper, the light signal will leak more. Fiber bending will cause fiber attenuation. As the bend radius decreases, the amount of attenuation from fiber bending increases.The fiber bend radius is not the same for all cables or patch cords and may vary depending on the type of cable or how it is manufactured. At present, the commonly used single-mode optical fiber core model is G652. Generally, the minimum bending radius of the optical fiber cable made of this type of optical fiber depends on the diameter and type of the optical cable. In order to be relatively safe, take the maximum value. For the commonly used G652 optical fiber, the minimum bending radius is selected to be greater than or equal to 30mm. Due to problems such as the armored structure of the optical cable, the bending radius is too small to easily cause damage to the armored sheath. The bending radius of the optical cable should generally not be less than ten times the outer diameter (OD) of the optical cable. Under the tensile load, the bending radius of the optical cable is 15 times the outer diameter. Assuming that the outer shell diameter of a certain optical cable is 1cm, the bending radius should be between 10cm and 15cm. To be on the safe side, common optical cable reels are usually best with a diameter of 30cm.When the optical cable is laid, due to irregular construction, the semi-bending radius of the optical cable is less than 30mm, and it is very easy to cause optical attenuation. In this case, as long as the bending radius fault point is found and the bending radius of the optical cable is restored to greater than 30mm, this fault can basically be solved.The second type is the light decay caused by the water entering the connector box.There is a splice box every 2km-3km of the optical cable, and the optical fiber will be fused once in the splice box. If the optical cable is damaged due to some reasons, 1-2 splice boxes will be added at the damaged position. Optical cable splice boxes are generally made of hard engineering plastics. The optical cable splice box is divided into upper and lower halves. There is a sealing strip between the upper cover and the lower cover of the splice box to prevent moisture intrusion. Due to the material problem of the splice box and the poor sealing of the sealing strip of the splice box or material problems, groundwater invades the inside of the splice box, resulting in optical fiber fusion. Spot soaked in water.The composition of the optical fiber is mainly SiO4, and the composition form is that silicon-oxygen tetrahedrons are connected to each other, and oxygen atoms exist in the form of bridging oxygen. If water (H2O) is encountered, the surface of the optical fiber will gradually undergo a hydrolysis reaction after adsorption, so the silicon-oxygen bond will be broken, which will cause the optical fiber to break. This really explains why optical fiber is afraid of water from the source!In fact, the waterproof measures of the optical fiber cable are relatively perfect under normal circumstances, but once water enters the optical fiber fusion joint, the sealing area of the splice box, and the exposed area of the bare wire, the life of the optical fiber will be reduced sharply or even the fiber will be cut directly.The third type is the light decay caused by external force extrusion.Fiber optic cables are being laid. Straighten the optical cable from the optical cable shaft, and during the cable blowing process, if the bending radius of the cable is too small or hard objects such as stones cut the optical cable, the optical cable will be squeezed and deformed. It is easy to damage the fiber core and cause optical attenuation.The fourth is the light attenuation caused by the fiber material problem.Optical fiber production technology continues to improve, and early production of optical fiber cables, or low-quality optical cables often suffer from optical attenuation caused by the optical fiber material itself. In recent years, the quality of optical fiber materials and production processes has been continuously improved, and the light attenuation caused by the problems of optical fiber materials has been basically solved. In recent years, newly laid optical cables have fewer and fewer such faults due to optical attenuation caused by optical fiber materials, but on old optical cables, or optical cables with very poor quality, it is still occasionally found decline. When encountering such problems, under normal circumstances, the only solution is to replace the inferior optical cable.Fiber hope fiber optic cable and patch cord manufacturers can provide high-quality fiber optic cables, fiber pigtails, fiber patch cords, single-mode multi-mode fiber, welcome to inquiry!

1. When bending the optical cable, the minimum bending radius cannot be exceeded.2. The traction force of laying optical cable should not exceed the maximum laying tension. At the same time, the optical fiber should be prevented from being subjected to excessive external force (side pressure, impact, bending, twisting, etc.).3. The termination and maintenance of optical fiber should be carried out by technical personnel who have received strict training. When optical cables are used in the backbone, at least 6-core optical cables should be used in the wiring room of each floor, and 12-core optical cables should be used for advanced applications. This is considered from three aspects: application, backup and capacity expansion. As for the networking mode of the optical fiber, it is also very flexible. can be realised:A. Point-to-point: establish a high-speed channel between two computers. The transmission rate is several Mbps to hundreds of Mbps, and the distance can reach 2 kilometers (multimode) to 5 kilometers (single mode).B. Star network: establish a star network topology through optical fiber network equipment.C. Ring network: the signal regenerator is connected by optical fiber to form a loop.The above is the full content of the requirements for the direct burial of optical cable wiring. In fact, the external factors of optical fiber attenuation are related to the construction of optical fiber wiring, because during the construction and laying, the optical fiber is caused by deformation, coupling loss between optical fiber and light source, and connection loss between optical fibers. , these can actually be reduced during the construction process.Fiber hope fiber optic cable and patch cord manufacturers can provide high-quality fiber optic cables,fiber pigtails, fiber patch cords, single-mode multi-mode fiber, welcome to inquiry!

1. Burial depth. Since the direct buried optical cable is directly buried under the ground, there must be a certain distance from the ground. With the help of the tension of the ground, the optical cable will not be damaged. At the same time, the optical cable should also be protected from freezing.2. Cleaning and backfilling of cable trenches. The bottom of the ditch should be flat, free of debris such as gravel and hard soil blocks that hinder the laying of optical cables. If the ditch is rocky or semi-rocky, 10cm thick fine soil or sandy soil should be paved and leveled at the bottom of the ditch.After the optical cable is laid, it should be backfilled with 30cm thick fine soil or sand as a protective layer. It is strictly forbidden to mix gravel, bricks, hard soil blocks, etc. into the protective soil layer. The protective layer should be gently stepped on manually.3. Optical cable laying. When laying optical cables or cables in the same ditch, they should be pulled and laid separately at the same time. If it is laid in the same ditch as the direct buried cable, the cable should be laid first, followed by the optical cable, and arranged in parallel at the bottom of the ditch.Just like laying optical cables in a ditch, they should be laid separately at the same time, and should not be crossed or overlapped at the bottom of the ditch. The optical cable should be placed flat on the bottom of the ditch or bent naturally to release the stress of the optical cable. If it is bent or arched, try to lay it flat, but it is absolutely not allowed to use strong methods such as foot stepping.4. Identify. Marks should be set at the joints, turning points, reserved lengths or intersections with other pipelines of directly buried optical cables for future maintenance and repair. The sign can either use an autocratic logo, or borrow a permanent building near the optical cable, measure the distance between a certain part of the building and the optical cable, and record it for future reference.Fiber hope fiber optic cable and patch cord manufacturers can provide high-quality fiber optic cables,fiber pigtails, fiber patch cords, single-mode multi-mode fiber, welcome to inquiry!