The introduction of DHCP Snooping
Most of the optical fibers we usually see are optical fiber jumpers, that is, both ends have connectors, which can be directly inserted and removed without using other tools, the so-called connector refers to SC, FC, LC and other types of classification.
And what is the core, as the name implies that it can be inserted and pulled out of the core, generally made of ceramic, the core is generally at the same time as the connector, or broadly speaking, the core is equivalent to a connector, what is the specific matter? Let me tell you this slowly.
The core inside the bare fiber is actually very thin and very easy to break, so something needs to protect it. For the middle of the fiber, we will set the cladding to cover the core to play a protective role, then for the tail of the fiber we use ceramic core. There is a very small hole in the middle of the core, the core is pierced through this hole in the metal part and then out of the ceramic part, the extra part is cut off from the ceramic side, and then take the tool to grind the extra part flat, and be careful when grinding, too much force will also break the core inside the core. (Xiabian remember that the internal core was ground off by hand during the university experiment. When the light is transmitted, it is found that the plug head emits an obvious red light, but the test power is not high, because the light is no longer propagated in a straight line, but is dispersed, resulting in a very low light measured numerically. The metal end is the middle of the optical fiber, which is generally protected by cladding and coating. The core head and the middle part need to be glued together, not only for solid connection, but also to prevent light overflow. Of course, the core metal is not necessarily connected to the optical fiber, it may also be used for BOSA production.
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