Cable connection

　　Methods include permanent connections, emergency connection, active connection.1 permanent optical connection (also known as hot-melt):This connection with the discharge method is to root the melting point fiber optic connection and connect together. Generally used in long-distance follow, permanent or semi-permanent fixed connection. Its main feature is to connect all of the connection method of attenuation in the lowest, typically 0.01 ~ 0.03dB / point. But the connection, you need special equipment (welding machines), and professionals to operate, and the connection points also need special containers to protect them.(2) emergency connections (also known as) cold fusion:Emergency connection is mainly used mechanical and chemical methods, will be fixed and bonding together two optical fibers. The main features of this method is fast and reliable connection, connect a typical attenuation of 0.1 ~ 0.3dB / point. However, long-term use connection points will be unstable, decay will be greatly increased, so only a short time emergency use.3 Active Links:Active connections is to use a variety of fiber optic connection devices (plug and socket), a site with the site or cable to connect up with a way. This approach flexible, simple, convenient, reliable, and is used in building the computer network cabling. The typical attenuation of 1dB / connector
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