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Fiber Connector and its application, performance requirements and terminal

Straight-through fiber optic connector (ST), fiber optic connector fixed (CF) and LC fiber optic connector and its application, performance and the requirements of the terminal. YA / V industry, widely used in the different connectors BNC connector, fiber optic fiber optic technology continues to mature and progressive development. Copper connector signal loss of AV systems are generally not large, but the optical connection is different, its transmission system in each interface play a very large effect. Let's look at the optical fiber physical connections in some of the problems associated with optical transmission equipment for fiber can be directly connected, but in some cases, most or almost all connectivity options are artificial fiber optic personally. The fiber optic cable in the process of transmission of the signal is lost mainly by the fiber optic cable used in the quality and type of decisions, each connector will be some loss of signal. According to the user selected the type of fiber connector, connectors, along with the amount of signal loss over fiber optic cable itself can generate the amount of signal loss.

calculation of signal loss with the same power supply, optical power often use dB,-3dB to measure. In the copper circuit, if analog or digital signals, the connector is basically a loss of signal is zero, which means that the total cable loss of volume compared with the signal generated by the contact resistance caused by ohmic loss connector is usually negligible. Most of the optical fiber installed on the system, the situation is opposite. In AV applications, smaller than 1,000 feet of fiber optic cable, signal loss is less than based on 3 dB. In the case of a few kilometers of transmission distance, the dispersion of multi-mode fiber is very important, so that the best signal loss Low single-mode fiber. However, if the transmission of near or distance transmission, access to the transmission signals each connector interface is a lot of signal loss, usually most of the signal loss occurred in the output side, the installation of a key to a good fiber optic connector is trying to connect to each other the relationship between the fiber to minimize signal loss and maintain a degree of signal loss within the range estimated for the operating system to provide long-term stability. Connector interface, the signal loss is measured with a dB. Since the end of the connection fiber are not proper interrupting a light path will lead to a certain amount of signal loss, such as the fiber surface is poor, no connection parallel side and so on also make the sign of loss rate is much higher than the expected magnitude of signal loss.

speed laser transmission optical fiber design evolution of the terminal has brought new problems. In the high transmission rate, reflecting the situation becomes very serious face, the need to angle grind or crush the ball, and special treatment to reduce the rate of loss. Signal loss, from a more precise estimate in terms of scope, the normal signal from the serial port of the loss of approximately 0.1 dB to 1.5 dB maximum. Think source signal through the distribution of machines, routers, workstations, the number of connections required contacts, contacts of the estimate More signal loss increases faster, but we have some unexpected circumstances in the range of account.

To keep the operating table normal system
In designing the optical system, the system works, which achieved very good results in the design of the system, we must consider that the system can produce some unexpected problems, and let the system for the operation of the effect. In designing the system, we must consider the worst possible system, and plan accordingly and look forward to a better functioning of the effect. Fiber connector design should incorporate this idea seriously. In system design, security, stability, system connection requires smooth fiber ends, Founder. Connection between the client and the client must be precise, to achieve accuracy microns, millionths of meter. Commonly used multimode fiber 50 to 62.5 microns in diameter, while single-mode fiber is only 8-9 microns in diameter. For this size in diameter and the diameter of a human hair (17-180 microns) compared to see any trace of the error can bring catastrophic losses.

connection Precision fiber optic equipment needs are very strict, so it must be very clean connector. fiber optic connectors and components are usually mounted on a set of garden, a fingerprint or dust from outside might seriously affect the performance of the connector, even lead to transmission failure, therefore, when the connector is not connected, you must have a clean protective covering ri.

The connection must also be fiber optic connector wedge tight in this whole design of the optical fiber connector, through the rings "to carry out, and to ensure that the connectors precisely at the moment. Terminals viscose fiber or compression sleeve inside the containment, as a permanent component. After inserting a built-in fiber optic rings to the side grinding is smooth, fiber-optic connections for the connector to provide smooth interfaces. The rings are usually relatively rigid material such as ceramics, of course, can also be stainless steel, plastic or tungsten carbide, SC, ST and FC universal 2.5 mm diameter sleeve, cap common LC in diameter and 1.25 mm. As the functional properties of the rings can be produced in accordance with the requirements of accuracy, will become the first optical fiber great connector to determine the properties. Among the many connections lettering, containers dock to connect the fiber optic and LED ring guarantees or coaxial alignment between the laser source.

Since technological development and implementation of the expansion, the rapid development of fiber optic connectors. Now on the market use fiber optic connectors are about 12 species and more, and each is to meet the specific needs arise, of course, there are certain technical limitations. Now the market trend is mainly towards the average price of a development compact connector model to support new transmission distribution system requires a greater density of transmission. As user expectations, as the continued development of the telecommunications industry has also contributed to the large surface optical fiber applications, largely due to various types of communications and entertainment services in fiber optic connections, due to rapid growth demand.

My first time using the optical fiber system, with the AT & T launched in 80 ST connectors. ST multimode network manipulation LAN systems and closed circuit television? ST seems to be a miniature BNC connector, optical fiber, is a simple change of blade type connector block, as no subject to any conservation treatment, easily damaged, so to deal with ST connector pay particular attention to the rings. ST connector yet is present in a wide range of industrial applications, but also gradually reduce its application.

FC connector is the ST connector product sister. FC said fixed About the Author

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