A fiber optic patch cord is a fiber optic cable capped at either end with connectors that allow it to be rapidly and conveniently connected to CATV, an optical switch or other telecommunication equipment. With a thick layer of protection, patch cords are usually used to connect the optical transmitter, receiver as well as the terminal box. It is widely accepted that in terms of transmission medium, the fiber patch cords can be defined into two categories: single-mode fiber patch cords and multimode fiber patch cords. This article will introduce the single-mode fiber patch cords from the following aspects.
Single-mode fiber patch cords contain a small core of 9/125 um and have only one pathway of light. Instead of simply bouncing the light of the edge of the core, the single-mode patch cords realign the light toward the center of the core with only a single wavelength of light passing through its core. Generally, the color of single-mode fiber patch cord is yellow. It is most often used in long-distance, high bandwidth network connections spread out over extended areas, usually longer than a few miles.
Single-mode fiber patch cords can achieve lower attenuation and thus obtain the ability for the signal to travel faster and further. Besides, it also has several other advantages: 1. Low insertion loss and high return loss 2. Excellent environmental adaptability 3. Good performance endurance under changing circumstance 4. Higher speed data transmission with longer distance 5. Simplex and duplex assemblies
As for the types of single-mode fiber patch cords, classified by connector construction, they can be divided into LC, FC, SC, ST, MTRJ, E2000 and MU fiber patch cords, etc. Each of these single-mode fiber patch cords are available both in simplex and duplex patch cords. So, the following part will focus on the introduction to simplex and duplex single-mode fiber patch cords.
- Simplex Single-mode Fiber Patch Cords Simplex single-mode fiber patch cords consist of a single strand of glass or plastic fiber. It is generally adopted in devices where only a single transmit and/or receive line is required, which means the data barely send in one direction. For instance, TV and radio broadcasting employed simplex fiber patch cords to achieve one direction signal transfer. During the process, information flows only from the transmitter to multiple receivers. The picture below is a SC-SC simplex single-mode fiber patch cable.
- Duplex Single-mode Fiber Patch Cords Duplex single-mode fiber patch cords consist of two strands of glass or plastic fiber. It is often seen in a zipcord construction format. A duplex fiber patch cable can be regarded as two simplex cables having their jackets conjoined by a strip of jacket material. This kind of patch cable is mostly used for duplex communication that a separate transmit and receive are required between devices, which indicates that these two connected parties can communicate with each other in both directions. Duplex fiber patch cords are usually adopted in the field of telecommunication. The picture below is a LC-SC duplex single-mode fiber patch cable.
As mentioned above, the single-mode fiber patch cord is often used to achieve long-distance and high bandwidth data transmission with little integrity loss. This type of cable is extensively adopted in telecommunication network, high speed metropolitan access network as it supports high speed multi channel video, data and voice services.
There are still many other factors that should be taken into account when choosing the suitable patch cords. As a leading fiber optic patch cord manufacturer in China, FS.COM offers a large quantity of single-mode fiber patch cords with the coverage of all the types. To learn more about single-mode fiber patch cords, please kindly visit the website at www.fs.com or contact via sales@fs.com.
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