What is Fiber Optic Cable? What are the domestic and international manufacturers of fiber optic cables?

First, what is fiber optic cable? Fiber optic cable is a high-speed, high-bandwidth communication transmission medium, which makes use of the transmission characteristics of light to transmit signals in the form of light through optical fibers. Compared with traditional cables, fiber optic cable has higher transmission speed, lower signal attenuation, higher bandwidth and better anti-jamming performance, so it is widely used in modern communication field. Composition of fiber optic cableFiber optic cable consists of optical fiber, cladding, core, protective sleeve and other parts. Optical fiber: optical fiber is the core part of fiber optic cable, which is a thin glass or plastic rod for optical signal transmission. Optical fiber usually consists of three parts: core, cladding and insulation. Among them, the core is the central part of the optical fiber, is the transmission channel of optical signals; cladding is the outer layer of the core, used to protect the core from damage; insulation is the outer layer of the cladding, used to protect the optical fiber from the influence of the external environment. Cladding: Cladding is a layer of material wrapped around the outer layer of the optical fiber, its main function is to make the optical signal transmission in the optical fiber will not occur when the light dissipation, while protecting the optical fiber from being damaged. Core: The core is the layer of material between the cladding and the protective sleeve, and its main function is to provide additional protection and support. Protective sheath: The protective sheath is a layer of material wrapped around the entire fiber optic cable, its main function is to prevent the fiber from being damaged, while protecting the fiber optic cable from environmental impacts. The working principle of fiber optic cableThe basic principle of fiber optic cable is to use the total reflection of light to transmit signals. Fiber optic cable consists of two parts: the fiber optic core and the fiber optic bushing. The fiber optic core is made of high-purity glass or plastic, and is typically between a few microns and tens of microns in diameter. The fiber optic bushing is wrapped around the outside of the fiber optic core, and its main purpose is to protect the core and reduce signal loss. When light travels from one medium (e.g., air) to another (e.g., a fiber core), it is refracted. The size of the angle of refraction is determined by two factors: the angle of incidence and the refractive index of the medium. When the angle of incidence is less than a critical angle, the light will be completely reflected back. This phenomenon is known as total reflection. Therefore, if light is introduced into the core of an optical fiber and is made to undergo multiple total reflections within the core, the optical signal can be transmitted to the other end. Advantages of fiber optic cables1.High speed transmission: fiber optic cables can support data transmission speeds of up to several hundred megabits per second, which is much faster than traditional copper cable wires.2.Low energy consumption: fiber optic cables consume less energy than traditional copper cable wires.

Second, what are the domestic and foreign manufacturers of fiber optic cables?

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