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  • The 17th China Congress in 2020 ( Ningbo ) Fastener, spring and …

    Date:2022-01-04

    1. Principle Fiber is usually glass solid fiber drawn from SiO2 as the matrix material, which is widely used in optical fiber communication. Its optical guiding principle is the mechanism of total internal reflection of light. The common naked fiber is generally composed of a high refractive index glass core and a low refractive index silicon glass cladding in the middle. The most external reinforced resin coating is composed. Fiber can be divided into single-mode fiber and multimode fiber. Single mode fiber: the center glass core is thin, and can only transmit one mode light. The dispersion between modes is very small, and it has the function of self-selection and mode limiting. Multimode fiber: the center glass core is thick, and can transmit various modes of light, but its mode dispersion is large and the transmission light is not pure. 2. Advantages Fiber laser has the characteristics of small volume,...

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