As we all know, CAT5/6 can only cover about 100 meters, which is obviously not enough for longer-distance transmission. In this case, optical fiber and media converter equipment play a vital role. By converting Ethernet to optical fiber signal, it can extend the distance up to 100 meters to 120KM. During this process, it remains stable and instant; starting from the terminal, the conversion will be processed again, so the terminal device in the network will be able to act as an Ethernet signal again.
Sometimes, converting to fiber is the only technical solution. If you are going to work in an electromagnetic interference (EMI) heavy environment - such as heavy machinery, welding machines, large motors, motor control or very high voltages-any copper wire, even the best enhanced category 5 or 6 will get Enough interference to prevent data transmission with low error rate. The fiber is completely insulated, so there is no EMI pickup. In fact, most high-voltage transmission lines have optical fibers in the middle.
One of the easiest ways to achieve photoelectric conversion is to use fiber media converters, which are widely used in modern network systems, and are usually used to achieve conversion between two different transmission media (optical fiber and copper wire) or to expand the network. However, the function of the optical fiber converter is not limited to this, it can also achieve single-mode-multi-mode, simplex-duplex and conversion between different wavelengths.
As we all know, when the distance between two connection points in the network system is long, we need to use single-mode fiber optic cables to transmit optical signals to ensure the normal transmission of signals. Therefore, many network service providers use single-mode fiber optic cables for transmission. Optical signals, and many equipment in data centers or enterprise networks are multi-mode fiber ports. At this time, a device that can realize single-mode-multi-mode conversion of optical signals is needed. Campus network is such a common application. The equipment in campus buildings is usually multi-mode fiber ports, and the connections between buildings usually use single-mode fiber optic cables.