What does optical fiber mean

　　What does optical fiber mean? Optical fiber is a kind of slender flexible glass or plastic fiber used to transmit optical signals, which is usually used to transmit high-speed data and communication signals over a long distance. The core of optical fiber is surrounded by materials with high refractive index and covered by materials with low refractive index. This design allows light to propagate inside the core with almost no optical loss, so that optical signals can be transmitted over a long distance without obvious signal attenuation. Optical fiber has become one of the most important technologies in modern communication field, which is widely used in telephone, Internet, television and computer network.In the long run, optical cable The value will be higher and higher, and there will be a great leap in essence. https://www.fibercan-network.com/

　　

　　In optical fiber, optical signal is converted into optical pulse and propagates along the core, which enables the signal to be transmitted over a long distance without obvious signal attenuation. Here are some basics of getting started with optical fiber:

　　

　　Optical fiber structure: Optical fiber is mainly composed of core, cladding and sheath. The core is the core of optical signal transmission, usually made of glass or plastic with high refractive index. The cladding is surrounded by low refractive index material to protect and guide light, and the sheath is used to protect the optical fiber and enhance its strength.

　　

　　Working principle of optical fiber: When light enters from a medium with high refractive index into a medium with low refractive index, the light will be totally reflected. The refractive index of the core material of optical fiber is higher than that of the cladding material, which makes the light can be totally reflected in the core for many times, thus realizing signal transmission.

　　

　　Optical fiber type: Common optical fiber types include single-mode optical fiber and multimode optical fiber. Single-mode fiber has small core diameter and high refractive index, which is suitable for long-distance and high-speed transmission. The core diameter of multimode fiber is large, which is suitable for short-distance transmission.

　　

　　Optical fiber application: Optical fiber has become one of the most important technologies in modern communication field, which is widely used in telephone, Internet, television and computer network. It is also widely used in medical, military, aerospace and scientific research fields.

　　

　　Advantages of optical fiber: Compared with traditional copper cable, optical fiber has higher bandwidth, lower signal attenuation and smaller signal delay. In addition, the signal of optical fiber is not easy to be eavesdropped or interfered, so it has higher security.