What is Fiber optic cable patch?

What is fiber optic cable patch cord?

Fiber patch cord, often called fiber patch cable, fiber jumper, or fiber patch lead, is a length of fiber cable that’s terminated with fiber optic connectors (LC, SC, MTRJ, ST and etc.) at each end of the cable. The connectors allow fiber optic patch cord to be rapidly connected to an optical switch or FTTx telecommunication devices OLT, ONU, Fiber splitter etc. Of course, the fiber patch cord price varries based on the type of connectors.  Its thick layer of protection is used to connect the optical transmitter, receiver, and the terminal box. A plug at one end is called a fiber optic pigtail.The difference between fiber optic patch cable and fiber pigtails are that fiber optic patch cables have connectors on both ends, whereas pigtails have a connector on one end and bare fiber on the other. A fiber optic patch cable can be used as pigtails by cutting in the middle of the cable.
fiber optic cable patch

Types of fiber optic patch cord

Common Types of Fiber Patch Cords
According to different specifications and standards, the common fiber optic patch cords can be categorized in the following perspectives: fiber cable mode, transmission mode, jacket type, connector type, and polishing type.

  1. Fiber Cable Mode: Single Mode or Multimode

The mode of fiber optic patch cables is an indication of how light beams travel through the fiber. There are two fiber cable modes: single mode and multimode.

Single mode fiber optic patch cable only allows one mode of light to pass along its length with a very thin diameter of 8-10 microns, thus being able to carry signals at much higher speeds with lower attenuation. Single mode fiber has two varieties: OS1 and OS2, which are different in construction and application. Generally speaking, OS1 and OS2 are both applicable for long-haul transmission but OS2 is more suitable for long-haul transmission by offering better performance with fewer losses.

single mode LC-LC fiber patch cord

single mode LC-LC fiber patch cord

Multimode fiber optic patch cord usually has bigger cores of 50 or 62.5 microns, which enables multiple light modes to be transmitted. It has five varieties supporting different transmission rates or distances: 62.5-micron OM1, 50-micron OM2, 50-micron OM3, 50-micron OM4, and 50-micron OM5. These can be classified by standard jacket colors. The distance which multimode fiber jumpers can reach is usually short because multiple light paths travel down the cable. Multimode fiber patch cords are the best-suited type for short-distance transmission within a building or campus.

The fiber patch cord price for single mode and multimode fiber optic patch cord is different. In most cases, the price of multimode fiber optic patch cord is higher than that of single mode fiber optic patch cord. Fiber optic patch cord suppliers usually provide single mode fiber patch cords.

FC-SC-multi-mode-Fiber-Patch-cord

FC-SC-multi-mode-Fiber-Patch-cord     

  1. Number of Fiber Strands: Simplex or Duplex
    Based on the number of fiber strands, there are two types of fiber patch cord: simplex and duplex. Simplex fiber patch cord contains one single strand of fiber and has one simplex connector on each end. It can be linked with a pair of transceiver modules featuring with one port, whereas duplex fiber patch cord consists of two strands of glass or plastic with one duplex connector (also considered as two simplex connectors). It is often linked with common transceivers or dual fiber transceivers.
    The fiber patch cord price for simplex fiber patch cord and duplex fiber patch cord is different. The price of duplex fiber patch cord is higher than that of simplex one. In most cases, fiber optic patch cord suppliers provide simplex fiber patch cords.
  1. Connector Type: LC, SC, ST or Others
    There are many types of connectors used in fiber optic patch cables such as LC, SC, ST, MTP or MPO. The different connector types are pluged into different interfaces, so better confirm the interface type of the devices the first time you use it.
    According to the criteria whether the connector on each side is the same, fiber optic patch cord can be divided into same-connector type and hybrid type. Fiber patch cords that have the same type of connector on both ends include LC to LC fiber patch cord, SC to SC fiber patch cord and etc., while hybrid fiber patch cord has different connectors on each end, like fiber patch cord LC to SC. Fiber optic patch cord suppliers often supply SC to SC fiber patch cords.
  1. Polishing Type: PC, UPC or APC
    Fiber optic connectors are designed and polished to different shapes to minimize back reflection. According to this connector polish types, there are PC, UPC, and APC fiber optic cable patch. The PC polish type has been replaced by the UPC type nowadays. Whether to choose UPC or APC depends on your actual application. Since APC provides less insertion loss than UPC, the APC fiber patch cables are more applicable for high bandwidth applications and long-distance links, such as FTTX, passive optical network (PON) and wavelength division multiplexing (WDM), while UPC fiber optic patch cords apply to optical systems that are less sensitive to insertion loss such as digital TV and telephony. Fiber optic patch cord suppliers often supply APC fiber patch cables.

Key Parameters

How to evaluate the performance of fiber jumpers? What are the key parameters?

  • Insertion loss
  • Return loss
  • Repeatability
  • Temperature stability
  • Tensile performance

Why do we need fiber optic patch cord?
Fiber optic cable patch products are widely used in: communication room, fiber to the home (FTTH), local area network (LAN), fiber sensor, fiber communication system, fiber connection transmission equipment, national defense and combat readiness, etc. They are also suitable for cable TV network, telecommunication network, computer optical fiber network and optical testing equipment.

Conclusion
From the introduction of the fiber optic patch cord types and their applications above, you may get some ideas on which type of fiber jumpers to be chosen. The parameters of common fiber optic cable patch such as fiber cable mode and connector types are the key elements that matter a lot. Fiber patch cable is widely used in our daily lives, so let’s get started by picking a suitable fiber jumper!


Post time: 2022-07-10

Testimonials

Lomoveishiy – Finland

I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!

Raymond – USA

Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.

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