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Fiber Optic Patch Cables

What are Fiber Optic Patch Cables

Fiber optic patch cable, often called fiber optic patch cord or fiber jumper cable, is a fiber optic cableterminated with fiber optic connectors on both ends. It has two major application areas: computerwork station to outlet and fiber optic patch panels or optical cross connect distribution center. Fiberoptic patch cables are for indoor applications only.

Common types of fiber optic patch cables

Fiber optic patch cables can be divided into different types based on fiber cable mode, cablestructure, connector types, connector polishing types and cable sizes.

Fiber Cable Mode:

1. Single mode fiber patch cables: Single mode fiber optic patch cables use 9/125 micronbulk single mode fiber cable and single mode fiber optic connectors at both ends. Singlemode fiber optic cable jacket color is usually yellow. Here is the explanation of what is singlemode and single mode fiber.

2. Multimode fiber patch cables: Multimode fiber optic patch cables use 62.5/125 micron or50/125 micron bulk multimode fiber cable and terminated with multimode fiber opticconnectors at both ends. Multimode fiber optic cable jacket color is usually orange. Here isthe explanation of what is multimode and multimode fiber.

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3. 10gig multimode fiber optic patch cables: 10Gig multimode fibers are speciallydesigned 50/125 micron fiber optimized for 850nm VCSEL laser based 10Gig Ethernet. Theyare backward compatible with existing network equipment and provide close to three times

the bandwidth of traditional 62.5/125 multimode fibers. 10 Gigabit is rated for distances up to300 meters using 850nm Vertical Cavity Surface Emitting Lasers (VCSEL). 10Gig fiber opticcable jacket is usually aqua.

Fiber Cable Structure:

1. Simplex fiber optic patch cables: Simplex fiber patch cable has one fiber and oneconnector on each end.

2. Duplex fiber optic patch cables: Duplex fiber patch cable has two fibers and twoconnectors on each end. Each fiber is marked A or B or different colored connector bootsare used to mark polarity.

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3. Ribbon fan-out cable assembly: For ribbon fan-out cable assembly, one end is ribbonfiber with multi fibers and one ribbon fiber connector such as MTP connector (12 fibers), theother end is multi simplex fiber cables with connectors such as ST, SC, LC, etc.

Connector Types: check out this fiber optic connector tutorial for all connector types available

1. Same connector type fiber patch cable: This fiber optic patch cable has the same typeof connector on both ends, such as ST, SC, LC, FC, etc.

2. Hybrid fiber optic patch cables: This fiber optic patch cable has different connectors oneach end. One end can be SC and the other end can be LC, ST, FC, etc.

Connector Polishing Types: Fiber optic connectors are designed and polished to differentshapes to minimize back reflection. This is particularly important in single mode applications. Typical

back reflection grades are -30dB, -40dB, -50dB and -60dB. Refer to this connector fiber polish typesdocument for more information.

1. PC (Physical Contact): Typical back reflection

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applications.

3. APC (Angled Physical Contact): Typical back reflection