Several simple methods to identify the advantages and disadvantages of Optical Cables

Source: Internet
Author: User

1. outer skin: indoor optical fiber cables generally use polypropylene or flame retardant polypropylene. The appearance should be smooth, bright, flexible, and easy to strip. Poor quality of the outer skin of the optical cable is not good, and it is easy to stick with the tight covers and.
The PE jacket of the outdoor optical fiber cable should adopt high quality black Polyethylene. After the cable is formed, the outer skin is flat, bright, thin and uniform, and there are no small bubbles. The outer skins of inferior optical cables are generally produced using recycled materials, which can save a lot of costs. The skin of these optical cables is not smooth, because there are many impurities in the raw materials, there are a lot of extremely small holes in the outer skin of the optical cable. After a long time, it will crack and enter the water.
Ii. Optical Fiber: Regular optical fiber production enterprises generally use A-class fiber cores of large factories. Low-cost and inferior optical fiber cables generally use Class C and D Optical fiber cables and smuggled optical fiber cables with unknown routes. These optical fiber cables are complex due to their sources, the factory lasts for a long time and often changes in the tide. In addition, the multimode optical fiber is often mixed with Single-Mode Optical Fiber. However, a small factory lacks necessary testing equipment and cannot judge the quality of the optical fiber. Because such optical fiber cannot be identified by the naked eye, the common problems encountered during construction are: narrow bandwidth, short transmission distance, uneven thickness, and no interconnection with pigtails; poor flexibility of optical fiber, the disk is broken when it is bent.
3. Enhanced steel wire: the steel wire of the outdoor optical fiber cable of the regular manufacturer is made of phosphating, and the surface is gray. Such a steel wire will not increase hydrogen damage, rust, and high strength. Inferior optical fiber cables are generally replaced by thin wires or aluminum wires. the identification method is very easy-the appearance is white and can be bent freely on the hand. The optical fiber cable produced with such a steel wire has a high hydrogen loss. After a long time, the two ends of the Optical Fiber Box will rust and break.
4. Steel Strip: Regular Production Enterprises use strip with dual-sided paint to prevent rust. inferior optical cables use common sheet metal, and only one side is used for Rust treatment.
5. Loose casing: the loose Casing of optical fiber cables should adopt PBT material. This type of casing has high strength, no deformation, and anti-aging. Inferior optical cable is generally made of PVC casing, such casing outer diameter is very thin, with a hand pinch flat, a bit like our drink straw.
6. Fiber paste: the fiber paste in the outdoor optical cable can prevent oxidation of the optical fiber. Due to moisture entering the tide, the paste is rarely used in inferior optical fiber cables, seriously affecting the service life of the optical fiber.
VII.: Also known as kaifla, is a kind of high-strength chemical fiber. It is currently the most widely used in military industry. This material is produced for military helmets and bulletproof vests. Currently, only Dupont and Aksu in the Netherlands can produce data in the world at a price of about more than 0.3 million tons. Indoor optical fiber cables and Electric Overhead optical fiber cables (ADSS) are reinforced with nylon yarn. Due to the high cost of, inferior indoor optical fiber cables generally make the outer diameter very fine, which can reduce the cost by a few S. Such optical cables can be easily dropped out when passing through a pipe. The ADSS optical fiber used to determine the use of in the optical fiber is determined based on the Cross distance and wind speed per second. Generally, you do not dare to cut corners.


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