Fiber Optical Cable Installation and Construction Requirements and Laying Scheme

Many people do not know much about the construction of optical fiber and cable. In fact, it contains a wide range of aspects. It is not only necessary to understand the basic knowledge of optical fiber such as optical fiber fusion, testing, connection, and troubleshooting, but also how to maintain the optical fiber and prolong the service life of the optical fiber. It is also a very important skill. Let's take a detailed look at the installation and construction requirements of optical cables and the construction plans for optical cable laying.

Construction requirements for fiber optical cables

Retest

(1) Check the routing direction, laying method, and joint position of the optical cable.

(2) The ground distance of the re-measurement route is provided to provide the necessary information for the distribution, distribution, and laying of the optical cable.

Cable length

Lay the optical cable in the existing pipeline. In order to ensure the safety of the optical cable, the reserved optical cable should be left in the man (hand) hole of the communication pipeline as much as possible. Reserved, the connector is reserved for long press 10 meters/side. In order to facilitate maintenance, when laying the cable, the joint well should be 1#, and the order should be analogized. Every hand hole that is a multiple of 5, 10, 15...5 should be reserved for 20m.

Optical cable inspection

(1) Before starting construction, the construction unit should carry out a quantitative count and visual inspection of the specifications and programs of the optical cables and equipment transported to the construction site. If any abnormality is found, it should be checked. Optical characteristics and electrical characteristics should also be tested for optical cables and connectors.

(2) Check that the specification, program, and manufacturing length of the single-disk optical cable should meet the requirements specified in the order contract.

(3) When the optical cable is inspected at the beginning, the end of the outer end of the optical cable should be checked, and a conspicuous note should be made on the cable reel. The other identification methods of the optical cable end should meet the following requirements: Facing the optical cable section, when the colored optical fibers are arranged clockwise, it is the A end, otherwise, it is the Bend.

(4) On-site inspection of optical fiber attenuation constant and optical fiber length.

(5) After the single-reel optical cable inspection is completed, the sealed packaging of the optical cable end and the optical cable reel packaging should be restored.

(6) Optical fiber connectors should have good repeatability and interchangeability. The length of the pigtail should meet the design requirements and the outer skin should not be damaged. The parameters of the pigtail shall comply with the contract. The wear and tear of the connector shall be in accordance with the contract.

Fiber Optic Cable Laying

(1) The optical cables in the newly built pipelines are protected by hard plastic pipes, and the length of the plastic pipes laid at one time is based on the principle of facilitating the passage of the optical cables.

(2) The bending radius of the optical cable should not be less than 10 times the outer diameter of the optical cable, and not less than 20 times during the construction process

(3) The traction force for laying the optical cable should not exceed 80% of the allowable tension of the optical cable, and the instantaneous maximum traction force should not exceed 100% of the allowable tension of the optical cable. The traction force should be added to the strength member (core) of the optical cable. There should be no twist in the process of laying the optical cable, and it is strictly forbidden to make small circles, surges, and other phenomena.

(4) The laying of the optical cable must be closely organized and commanded by a special person, and there should be good communication means during the pulling process. After the optical cable is laid, check whether the optical fiber is in good condition. The end of the optical cable shall be sealed and moisture-proof, and shall not be immersed in water.

(5) When the optical cable penetrates into the pipeline or the pipeline turns or has a crossover, a guiding device or a horn protection tube should be used, and the outer sheath of the optical cable should not be damaged. Word segment traction.

(6) The optical cable is placed on the specified bracket, and an appropriate margin should be left to prevent the optical cable from being stretched too tightly. The optical cable in the person (hand) hole where the connector is located shall meet the design requirements after reservation. The reserved optical cable should be properly placed in the specified position.

(7) The reservation of the overhead optical cable is reserved at the joint rod, and the poles on both sides are properly reserved, and the reserved length is 15-20m; for the overhead optical cable crossing the river, the remaining 15-20m on both sides of the river with the river width greater than 30m 20m, and 15-20m is left for every 10 pole-stop optical cables in the overhead section. The optical cable crossing the river is left on the adjacent pole of the first pole on the riverbank: the joint should be left on the joint pole, and each joint point should be left with 10m.

The above are the optical cable installation and construction requirements and optical cable laying construction plans for you. GL has been focusing on the research and development and sales of optical communication products for 18 years. Welcome to consult if you have any questions and requirements of fiber optical cable.