Patch cables are commercially available from Thor Labs using the same visible fiber as used in FOC with Fiber connector-Physical Contact or FC connector.Some patch cables for both VIS-FOC and UV-FOC devices were constructed in the lab using a connectorzization tool kit and FC connectors. The user or the network technician can connect fiber optic Eth ernet ports to the fiber optic connectorson the horizontal cabling segment using straght-through fiber optic patch cables.They need not conecern themselves about the signal crossver,because it is already accomllishes in the fiber optic horizontal segment.on the other backone fiber optic cable systems that go between floors of a building,or between buildings on a campus,are usually wired straight through.When making a connection between an Ethernet switch port and a backbone fiber optic system,you need to make sure that the signal crossover is achieved in the patch cable at one of the link.LC Patch Cable which connector has zirconia ceramic ferrule measuing 1.25mm O.D. wth either a PC or APC endface, and provides optimum insertion and return loss.And precision optical cable manufacturing services can provide a wide range of standrad and custom cables. All cables are tested,serialized and labeled in individual bags with complete test in formation

Multimode patch cord optical loss power measurement is performed using the steps described in ANSI/TIA-526-14,method A.The patch cord is substituted for the cable plant.Because patch cords are typtically no longer than 5m, the loss for the optical fiber is negligible and testing can be performed at 850nm or 1300nm. The loss measured in thistest is the loss for the patch cord connector pair.ANSI/TIA-568-C states that the maximum loss fora connector pair is 0.75dB。

After setting up the test equipment asdescribed in ANSI/TIA-526-14，method A，clean and inspect the connectors at the ends of thepathc cords to be tested.Verofu that your test jumpers have the same optical fiber type and connectors as the patch cords you are going to test .The transmit jumper should have a mandrel wrap or modal conditoner depending on the revision ANSI/TIA-526-14 being used for testing.

Because both Fiber Optic Cord connectors are easily accdssible,optical power loss should be measured in both directions.The loss for the patch cord is the average of the two measuements.If the loss for the patch cord exceeds 0.75dB in either direction,the patch cord needs be repaired or replaced.

The fiber Optic Cord is mainly used on patch panel or for the connection between outlets and terminal equipment,The quality of connectors and fibers is mainly determined by the insertion loss and return loss.

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