The three types of optical cable connections include permanent connection, emergency connection, and movable connection.
Permanent connection: This connection method uses the method of electrical discharge to melt and connect the connection points of two optical fibers together. The connection attenuation is the lowest among all connection methods, with a typical value of 0.01~0.03dB per point.
Emergency connection: This method uses mechanical and chemical methods to fix and bond two optical fibers together. The connection is rapid and reliable, and the connection attenuation is 0.1~0.3dB per point.
Movable connection: Various optical fiber connection devices (such as plugs and sockets) are used to connect stations to stations or stations to optical cables. It is flexible, simple, convenient, and reliable, and is mostly used in the cabling of computer networks in buildings. Its typical attenuation is 1dB per joint.
In addition, the three connection methods of optical fibers include the direct connection method, the cross connection method, and the loop connection method.
Direct connection method: Directly connect two optical fibers. Usually, optical fiber connectors or mechanical connectors are used for connection. It is suitable for situations with a short distance, usually not exceeding several hundred meters.
Cross connection method: Connect two optical fibers in an intersecting manner. Usually, an optical fiber distribution frame or an optical fiber splitter is used for connection. It is suitable for scenarios with a long distance, usually exceeding several hundred meters.
Loop connection method: Form multiple optical fibers into a loop connection. Usually, an optical fiber ring network is used for connection. It is suitable for scenarios that require high-speed data transmission and redundant backup.