How to identify the quality of fiber optic cable?

High-quality materials ensure that optical fibers have lower attenuation, dispersion and other characteristics, thus improving the efficiency and quality of optical signal transmission.
Today we will discuss what methods are used in practice to identify the quality of fiber optic cables.

1)Sheath:
indoor fiber optic cable is generally used polyvinyl chloride or flame retardant polyvinyl chloride, the appearance should be smooth, bright, flexible, easy to peel. Poor quality fiber optic cable jacket is not good, easy and inside the tight sleeve, aramid adhesion.
Outdoor fiber optic cable PE sheath should be made of high quality black polyethylene, after the cable is formed, the outer skin is smooth, bright, uniform thickness, no small bubbles. Inferior quality fiber optic cable jacket is generally produced with recycled materials, so that you can save a lot of cost, the skin of the cable is not smooth, because there are many impurities in the raw materials, made of fiber optic cable jacket has a lot of very small pits, long time on the cracking, water.

2)Optical fiber:
regular cable manufacturers generally use large manufacturers of A-class fiber core, some low-priced low-quality optical cable usually use C-class, D-class optical fiber and smuggled optical fiber from unknown sources, these optical fibers due to the complexity of the source, the factory for a long time, often has been moisture discoloration and multimode optical fiber is often mixed with single-mode optical fiber, and the general lack of small factories must be testing equipment, can not make judgments on the quality of optical fibers. Because the naked eye can not identify such a fiber, the construction of touch often to the problem is: bandwidth is very narrow, short transmission distance; uneven thickness, can not be docked and pigtail; lack of flexibility of the fiber, disk fiber when a bend on the break.

3）Reinforcement of steel wire:
regular manufacturers of outdoor fiber optic cable steel wire is phosphated, the surface is gray, so that the steel wire into the cable does not increase hydrogen damage, not rust, high strength. Inferior quality fiber optic cable is generally used instead of fine iron or aluminum wire, identification method is very easy to white appearance, pinch in the hand can be bent at will. Produced with such steel wire cable hydrogen loss, over time, hanging the ends of the fiber optic box will rust and break.

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