2014年8月17日星期日

The Physical Construction Of The Optical Cable

In recent years, the trend has been to replace all copper communications cable will optical fiber cable.Fiber optic cable communicates using light energy, not electrons.The advantages of using light can be summed up in five categories: speed, bandwidth, distance, resistance, and maintenance.You will see after filling out this chapter that all five categories optical fiber cable can simply outperform copper in every instance.The physical construction of the optical cable can take on many forms, including: Simplex Fiber Optic Cable, Ftth,Drop Cable, Hybrid or composite cables

Simplex Fiber Optic is a jacketed,single-fiber, tight-buffered cable that uses Kevlar for strength and reinforcement.Simplex Fiber Optic Cables typically are used as patch cords and in backplane applications.The backplane refers to the socketed interconnection of multiple cables circuit cards for the purpose of expansion.

Ftth Drop Cable distribution technology has gained in acceptance in many parts of the world as the technology direction for distribution networks.Legacy telephone and cable networks still have the ability to deliver today's services and for a time technology can be utilized to extend their service life.But FTTH is attractive for Greenfield starts and selected overbuild or rehab situations.In the US, about 21 million homes are passed with Ftth networks and about 7 million homes are connected as of March of 2011.There are over 40 million homes connected outside of the US, with Asia Pacific statistics,but the designs can be quite different.Nearly all are based on a pons for service delivery to the customer premises.

Hybrid Cables come in one of two varieties: those that contain both optical fibers and copper conductors under a single jacket, and those that contain multimode and single mode optical fiber under a single jacket.In either case, the different varieties are insulated separately, as required, because they are bundled together as s single cable.When producing such cables, a manufacturer must take into account the requirements and classifications of differing electrical circuits using copper conductors, as well as the insulation barrier and separation requirements.Composite cable over multiple types of cable between systems.

62.5/125μm Multimode Simplex Tight Buffer Round Riser Indoor Fiber Optic Cable

Typical applications for optical fibre cable include communications, data transmission, instrumentation, process, and industrial control.Fiber optic cables are lightweight and unable to spark,shor-circuit,or ignite combustible materials, making them an outstanding option for hazardous locations where gaseous or chemically explosive environments may exist.

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