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Using fiber cable and fiber patch cables

 

Fiber Optic Patch Cable is commercially available from Thor Labs using the same visible fiber as used in FOC with fiber connector-physical contact or FC connectors. Some patch cables for both VIS-FOC and UV-FOC devices were built-in the lab using a connectorization tool kit and FC connectors.

Patch cables, or jumper cables, connect the patch panel to the hubs, connect workstations to the wall jacks, or connect multiple hubs.This grants the network administrator to easily reconsider the network because all that has to be modified are the jacks the patch cables connectors.The first two types of connections require a straight-through cable.The third needs a crossover cable.

Different cables are required because of the way twisted-pair cables connect.One pair of wiring transmits information from one machine to another and a second pair transmits informatin in the reverse direction.A hub reverses the wiring from a workstation,allowing the lines to match up correctly and straight through to the high- speed LAN/.WAN system.However, when connecting two hubs,the wiring of both is reversed and so both would attempt to transmit on the same pair and to receive on the same pair--thus causing them to be unable to communicate.A crossover cable reverses the transmit and receives lines so that the hubs can correctly communicate.

Fiber optic cable is hereby designated as either Single Mode Optical Fibre or multimode fiber patch cables.The term mode relates to the number of independent subcontinents of light that propagate through distinct areas of the fiber -optic cable core.Single mode fiber cable uses only a single mode of light to propagate through the fiber cable,whereas multimode fiber allows multiple modes of light to propagate.

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A mode -conditioning patch cord should be used at each end of the link when connecting 1000BASE-LX equipment to a multimode fiber optic segment ,Make sure that the tax equipment to a multimode fiber optic segment ,Make sure that the TX port on the equipment is connected to the single mode portion of the mode conditioning patch cable .The multimode fiber used in the conditioned launch cable should match the multimode fiber plants ,In other words ,if your fiber plant uses 62.5/125 MMF,then that;s the type of fiber that should be used in the conditioned patch cable as well.