Activity Connections
Activity connections are a method of connecting sites to each other or to fiber optic cables using various fiber optic connectors (plugs and sockets). This method is flexible, simple, convenient, and reliable, and is often used in computer network cabling within buildings. The typical attenuation is 1 dB/connector. They can be connected to connectors and inserted into fiber optic sockets. The connectors lose 10% to 20% of the light, but they make reconfiguring the system very easy.
Emergency Connection (also known as Cold Fusion)
Emergency connection primarily uses mechanical and chemical methods to fix and bond two optical fibers together. The main characteristics of this method are its speed and reliability, with a typical connection attenuation of 0.1–0.3 dB/point. However, the connection point may become unstable over time, and the attenuation will increase significantly, so it is only suitable for short-term emergency use.
Permanent Fiber Optic Connection (also known as Hot Fusion)
This type of connection uses an electrical discharge to melt and fuse the connection points of two optical fibers together. It is generally used for long-distance connections and permanent or semi-permanent fixed connections. Its main characteristic is that it has the lowest connection attenuation among all connection methods, with a typical value of 0.01–0.03 dB/point.
