Outdoor optical cables are a type of communication line in which a certain number of optical fibers are formed into cable cores in a certain way, with a sheath or even an outer sheath, to achieve optical signal transmission. A cable formed by a certain process of optical fiber (optical transmission carrier). It is mainly composed of optical fibers (glass fibers as thin as hair), plastic protective sleeves, and plastic skins. The optical cable does not contain metals such as gold, silver, copper, and aluminum, and generally has no recycling value.
According to the transmission mode of optical fibers, they are divided into single mode optical fibers and multimode optical fibers
1. Single mode fiber: This refers to a fiber that can only transmit one propagation mode at the working wavelength, commonly referred to as a single mode fiber. This refers to a fiber that can only transmit one propagation mode at the working wavelength. In cable television and optical communication, optical fiber is widely used.
2. Multimode fiber: A fiber that divides the fiber into multiple modes according to its working length and its possible propagation mode. Fiber core diameter is 50 μ m. Due to the hundreds of transmission modes, the transmission bandwidth is mainly dominated by mode dispersion compared to SMF.