Under what circumstances need to use the photoelectric composite cable

The birth of optoelectronic hybrid cable

The normal operation of network services generally requires equipment to solve two problems through cables: the power supply of the equipment itself and the transmission of data. However, the installation environment of some devices is relatively complex, such as WLAN APs, 5G small cells, video surveillance cameras, etc. It is difficult to have suitable power sockets around the installation environment, making it difficult to supply power to the devices. In such scenarios, it is often hoped to solve the problems of device power supply and data transmission at the same time through a single cable.

Photoelectric composite cable

In the communication cable, according to the different media, it can be divided into optical cable with optical fiber as the transmission medium and copper cable with copper wire as the transmission medium.

Optical fiber uses the principle of total reflection of light for data transmission, which has the advantages of large bandwidth, low loss, and long transmission distance. However, the material of optical fiber is glass fiber, which is an electrical insulator and cannot support PoE power supply.

Copper wire uses metal as transmission medium, and uses electromagnetic wave principle for data transmission, which can transmit both data signals and power signals, but there will be thermal effects in the transmission process, so the loss is large, and it is not suitable for long-distance data transmission. In the network integrated wiring specification, it is clearly required that the total length of the twisted pair link cannot exceed 100 meters.

Can the two be used together?

Taking the advantages of the two, the optical fiber and copper wires are integrated into one cable, and the optoelectronic hybrid cable is introduced. It uses optical fiber to transmit data signals and copper wires to transmit power signals, which can not only complete high-speed data transmission, but also Complete long-distance device power supply.

scenes to be used

In the campus network, the optoelectronic hybrid cable is mainly used for the connection between the switch and the AP or the remote module, and realizes long-distance POE power supply and high-speed data transmission at the same time, and the installation position of the remote module in this case is not limited to the weak current. It can be directly extended to the user's desktop, which greatly saves and management costs.

Optical hybrid cable 1.0 vs 2.0

According to the difference of interface types, the optical-electrical hybrid cable has undergone the evolution of the first generation and the second generation. The interface of the first generation is separated from optical and electrical, and the connection to the device needs to occupy an optical port and an electrical port respectively. The interface of the second generation is a combination of optoelectronics, and only one optical-electrical hybrid interface is required to connect to the device, resulting in an optical-electrical hybrid cable.

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