Applications Of Fiber Optic Connectors And Analysis Of Connector Terminals

In this article we will introduce user fiber optic connector (SC Connector), straight-through fiber optic connector (ST Connector), fixed fiber optic connector (FC Connector) and LC Connector and their applications, performance and termination requirements.

Different from BNC connectors widely used in A / V industry, fiber optic connectors gradually develop with the mature of fiber optic technology. Copper Connector for AV system signal loss effects are generally not large, but different to fiber optic connector, for each interface in the transmission system has a great influence. Let’s have a look at some problems caused by physical connection of fiber optic, fiber optic transmission equipment itself can command connection, but in some cases, most or almost all of the optical transmission connection options are acted by people. The amount of signal loss of fiber optic cable during the transmission is mainly determined by the quality and type of fiber optic cable you used, each connection terminal generates a signal loss. According to the different fiber optic connector head types user select, the total connector terminal signal loss may exceed the amount of signal loss produced by fiber optic cable itself.

Maintain A Normal Operation Of System

In the fiber optical system design, the system works properly, then it reaches very good results. In the system design, we need to consider some unexpected problems, and let the system operates normally. In system design, we have to consider the worst situation may occur, and plan accordingly, and look forward to better operational results. Fiber optic connectors designer must take this philosophy in mind. In system design, security and stability system connections require the connection end smooth and founder. The connection between the client and the client must be precise, accurate and even to reach micron, millionth of a meter. The diameter of commonly used multi-mode fiber optic range from 50-62.5 microns and that of single-mode fiber optic is only 8-9 microns. Compared with diameter of a human hair (17-180 microns), any little mistake can bring catastrophic losses.

Fiber optic connector is seriously strict to the precision of equipments, so connectors must be very clean. Fiber optic connectors and accessories are usually arranged in a sleeve, a finger print or external dust may seriously affect connector’s performance, and even lead to transmission failure. Therefore, when the connector is not connected, it should be kept in a clean protective sleeve.

In connection, we should also be tightly wedged the optical fiber connector, in all current fiber optic connector designs, through the “ring” to carry out, to ensure accurate when paired connectors. Fiber Termination is through viscose or by crimping the ferrule inside the confining, become a permanent component. After the built-in fiber is inserted, put the ferrule end mill smooth for fiber optic connectors provide a smooth interface. The ring is usually composed of hard material such as ceramic, of course, it also can be stainless steel, plastic material or tungsten carbide. The diameter of general rings of SC, ST and FC is 2.5 mm, that of LC is 1.25 mm. As the functional properties of the ring can be produced in accordance with the precision required, becomes the primary characteristic of fiber optical connector. Among the connection rings, the spring-type container connecting ring guarantee coaxially aligned between the fiber and the LED or a laser.

As technology advances and applications expand, fiber optic connectors are also rapid developing. Now there are 12 or more types of fiber optical connectors used in the market, each meets the specific needs and came into being, of course, there are some technical limitations. Now the main market trend towards moderately priced, compact connector model, support new transmission distribution system which requires greater transmission density. As users expect, the continuous development of telecommunication industry also contributed to the large area using of fiber optic, largely due to the various types of communication and entertainment services require more and more fiber optic connectors.

Terminal Consideration

Traditionally, the terminal end of fiber optic is generally slow, the price is higher, the equipment requirements and technical requirements are also very high. In considering the terminal of single-mode fiber-optic cable, there are several factors must took into account. In some cases, we can choose some cables which have already set up terminal according to various types of fiber.

Most Fiber Patch Cables Can Be Classified To The Following Categories
In tailor-mount applications, we can only select a specific terminal, however, using a splice tool, can reduce the length of single-mode fiber to extend the terminal site, reducing the demand number of equipments and the use of technology. For multimode fiber optic cable, the new splice method using a simple optical cutting tool, will be assembled into a pre-designed fiber optic connector / cable. This method is very simple, just a fiber-to-fiber butt joints, the joints are usually uses a special optical gel, so that fiber optic terminals condense each other.