Detailed explanation of the connection and wiring skills of fiber optic composite cables

　　The connection and wiring techniques of fiber optic composite cables (such as fiber optic composite power cables OPPC) involve several steps and considerations. The following is a detailed description of this process:

　　I. Preparation

　　Confirm the cable model and specifications:

　　Before connecting the fiber optic composite cable, it is first necessary to confirm the model, specifications, and tranSMission performance parameters of the fiber optic cable to ensure that the selected connection method and tools match the fiber optic cable.

　　Prepare the necessary tools and equipment:

　　Fiber optic splice box: used to connect two sections of fiber optic cable, providing physical protection and sealing.

　　Fiber fusion splicer: used to melt and fuse the end faces of two optical fibers together to form a low-loss permanent connection.

　　Optical fiber cutter: used to cut optical fibers and produce qualified end faces.

　　Stripping pliers: used to peel off the fiber skin and coating.

　　Alcohol cotton ball or dust-free paper: used to clean fiber optic end faces.

　　Heat shrinkable tube: used to protect the fiber fusion splice.

　　Heating furnace: used to heat the heat shrinkable tube to tightly wrap the fiber fusion splice.

　　Optical fiber connection steps

　　Stripping the cable:

　　Use wire stripping pliers to peel off the outer skin of the optical cable, taking care not to hurt the bundle tube. The stripping length should be determined according to the requirements of the splicing box and the length of the optical cable, usually about 1 meter.

　　Wipe the ointment clean with toilet paper, and then put the optical cable into the splice box. When fixing the steel wire, it must be pressed tightly and not loose to prevent the optical cable from rolling and breaking the fiber core.

　　Dividing fiber and piercing heat shrinkable tube:

　　Divide the fibers of different bundles and colors through the heat shrinkable tube. The fibers stripped of the coating layer are fragile, and the use of heat shrinkable tubes can protect the fiber fusion splice.

　　Make the fiber optic end face:

　　Use wire stripping pliers to peel off the coating layer of the fiber, and then wipe it on the bare fiber several times with an alcohol cotton ball or dust-free paper to remove dust and oil stains.

　　Use a fiber cutter to cut the fiber to make a qualified end face. The cutting length should be determined according to the type of fiber and the thickness of the outer coating.

　　Fusion Fiber:

　　Put the optical fiber into the alignment slot of the welding machine, and the welding machine will automatically align the end face of the optical fiber.

　　The fusion splicer heats the fiber end face and generates an arc, melts the fiber end face, and then automatically cools the fiber to form a low-loss permanent connection.

　　Heating heat shrinkable tube:

　　Place the heat shrinkable tube in the center of the bare fiber and then place it in a heating furnace for heating. The heating time and temperature should be determined according to the type and specification of the heat shrinkable tube.

　　Fiber and Fixation:

　　Connect the good optical fiber disk to the optical fiber storage disk. In the fiber disk, the larger the radius of the coil, the larger the arc, the smaller the loss of the entire line. Therefore, a certain radius should be maintained to avoid unnecessary losses.

　　Fix the fiber with tape to ensure it doesn't move or come loose.

　　III. Wiring and testing

　　Wiring:

　　For optical fiber composite power cable (OPPC), in addition to optical fiber connection, power line wiring is also required. This usually involves steps such as grounding the metal jacket of the optical cable and connecting the power line.

　　When wiring, relevant electrical safety codes and standards should be followed to ensure that the wiring is firm and reliable.

　　Test:

　　After the fiber connection and wiring are completed, equipment such as an OTDR tester should be used for testing to check parameters such as joint loss at the fiber connection point, loss throughout the fiber link, and loss distribution along the length of the fiber.

　　When testing, ensure that the pulse size and width of the tester are properly selected, and set according to the index of refractive index n given by the manufacturer.

　　IV. Precautions

　　Keep it clean: During the entire connection process, the fiber end face and splice box should be kept clean to avoid the impact of dust and oil on the fiber connection quality.

　　Avoid damage: During the steps of peeling, cutting, and welding, care should be taken to avoid damage to the fiber.

　　Sealing and protection: The splice box should be well sealed to prevent moisture and dust from entering. For cables that require long-term exposure to harsh environments, additional protective measures should be taken.

　　Records and identification: During the connection process, the connection records should be made, including fiber sequence, fusion chromatogram and other information. At the same time, labels should be made on the optical cable for subsequent maintenance and management.

　　In summary, the connection and wiring skills of fiber optic composite cables involve multiple steps and precautions. By following the correct steps and precautions, the quality and safety of fiber optic connections can be ensured, providing a strong guarantee for the normal operation of the communication system.