Most optical fibers must be covered by several layers of protective structure before use. The covered cable is called optical cable. Below small make up to introduce you to multi-mode optical cable transmission distance knowledge.

In multi-mode optical fibers, the diameter of the core is 15 microns to 50 microns, roughly equal to the thickness of human hair. The diameter of single mode fiber core is 8 microns to 10 microns. The core is surrounded by a glass envelope with a lower refractive index than the core to keep the light inside. On the outside is a thin plastic jacket to protect the cover. Optical fibers are usually bunched together and protected by a shell. Fiber core is usually made of quartz glass cross-sectional area of a small double concentric cylinder, brittle texture, easy to fracture, so the need for an additional protective layer.

1: transmission rate: 1Gb/s, 850nm

A, common 50 microns multi-mode optical fiber transmission distance 550

B. Common 62.5 microns multi-mode optical fiber transmission distance 275m

C. New 50mu multi-mode optical fiber transmission distance 1100m

2: transmission rate: 10Gb/s, 850nm

A. common 50-microns multi-mode optical fiber transmission distance 250m

B. common 62.5 microns microns multi-mode optical fiber transmission distance 100m

C. The new 50-mu multi-mode optical fiber transmission distance is 550m

Above is the multi-mode optical cable transmission distance knowledge, you can understand. Multi-mode fiber transmits the main mode or multiple other modes, and the light will be reflected continuously along the edge wall of the fiber, which has a lot of dispersion and light energy waste.