What are the main ingredients of optical fiber?
Generally requires high transmittance of core material, and coating materials require low refractive index, and requires the core and coating refractive index difference is bigger, the better. In thermal properties, the thermal expansion coefficient of the two materials is required to be close to each other. If the difference is large, the resulting optical fiber generates internal stress, which reduces the transmittance and fiber strength. In addition, the softening point of the two materials and the viscosity at high temperature are required to be close.
The main raw material of optical fiber fiber, according to the composition of raw materials, inorganic and organic types, inorganic materials have high-purity quartz, organic raw materials have polystyrene, PS, polymethyl methacrylate, PMMA and so on.
Inorganic non-metallic materials, SIO2
Optical fiber, which is called fiber cable in practical application, is light, low cost, high speed and small loss relative to metal cable! Now widely used for communications, such as mobile base stations, telephone, network and so on. The transmission is a digital signal (0 and 1), and the modulation terminal inputs the modulated image or voice signal to the optical cable, and the receiver receives and demodulates the image or voice signal after receiving the demodulation. Fiber optic cables are quite common now. Have you ever heard of undersea fiber-optic cables?. Gongbian common sign "no copper cable, cable theft, theft of useless, crime sentence is to set up" warning cable.
