There are many different fiber optic connection methods, connector types, and ways to terminate them, single-mode and multimode connectors create differences in the types and methods used as well. If you plan to work with fiber optics, you should perform in-depth research about fiber before attempting to terminate it. In fact, it is best to take a course in fiber optic cable termination or learn from an expernt.

When terminating fiber and adding connectors, there are two main connector type to chosse from: SC and ST. There are many other connection types (fiber has been around since the early 1970s) that have been developed through the years, but to limit the scope of this book to what is most widely used on data networks today, you need to be thoroughly familiar with the SC and ST connectors.

SC is a snap-in connector, meaning that you place it in a receptacle, such as on a network switch, and click it into place; this is also called stick and click. The SC connector is shown in Figure 8.14.

SC connector are a relatively new connector-type technology, but are in popular use today. Part of their popularity is that are cheaper and easier to use than ST connectors, and less prone to damage. You will most likely see thesee types of connections from large core swiches with fiber uplinks to smaller closet swiches in campus network.

As we know, SC patch cable is with SC connector which was invented by NTT. It is widely used fiber optic patch cables. SC fiber optic patch cable has low cost and good durability, SC fiber optic patch cables is with a locking tab on the cable termination, it is a push and pull type optical connector. The common SC patch cable we have seen, there are SC to FC, SC to SC adss fiber, SC to ST, and SC to LC.

ST Connector

ST (which is an old AT&T trademarked technology) is another type of fiber connection type. Like the BNC connector for coaxial cable, it has a bayonetbased mounting end and a long cylindrical ferrule, which is spring-loaded sheath used to hold the fiber in place. You insert the connector into a receptacle and twist it to lock it into place. Stick and twist considered an older technology, but is still widely used on data networks, and its install base is broad. An ST connector is shown in Figure 8.15

Real-world production enviroments (especially when working with Cisco Systmes, Nortel Networks) do not include ST in new implementations. In most cases, the only way to use this order technology is with a mediation device, such as a transceiver, which has one end that plugs into an attachment unit interface (AUI) port and an ST-based mounting connection on the other end.

To facilitate installation of our active fiber equipment we support a large selection of fiber optic patch cords. The always in stock fiber cables include optical connectors such as: SC, ST, LC and FC type, simplex and duplex. Our patch cords range from 0.5m to 10m and have almost all available combination of optical connectors. The most available lengths are 1m, 2m, 3m, 5m, and 10m patch cords. All single-mode patch cords are UPC polished (Ultra Physical Contact), while the multi-mode cables are PC polished. All fiber patch cords are manually tested and verified and each patch cable is individually sealed and labeled with measured optical performance.We offer competitive price for fiber optic patch cable, our company has strictly quality control system and high quality products,the custom fiber patch cable is fast delivery to worldwide customers.

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