What is the main use of optical fiber in HFC transmission equipment?

In HFC transmission equipment, optical fiber plays a crucial role. It acts as an "information highway," efficiently transmitting large amounts of data, video, and audio signals from the central headend (also known as the frontend) to various user areas. This "highway" is not only fast but also capable of long-distance transmission with low loss, making it ideal for constructing backbone networks.

Specifically, the main roles of optical fiber in HFC networks are as follows:

High-speed transmission: Optical fibers use the principle of total internal reflection to transmit data, far surpassing traditional cable lines in transmission speed. In HFC networks, optical fibers are responsible for swiftly delivering signals such as high-definition television programs and high-speed internet data generated at the frontend to various optical nodes.

Long-distance transmission: Compared to coaxial cables, optical fibers have a longer transmission distance. This means that we can utilize optical fibers to build networks with broader and more stable coverage, meeting the needs of more users.

Low loss: During transmission, the loss of optical signals in optical fibers is minimal. This ensures that the signal hardly attenuates during transmission, guaranteeing the quality of the received signal for users.

Strong interference resistance: Optical fibers are immune to electromagnetic interference and can maintain stable transmission performance in various complex environments.

In HFC transmission equipment, optical fibers are typically used for transmission from the frontend to various optical nodes. At these optical nodes, optical signals are converted into electrical signals and further transmitted to users' homes through coaxial cables. This hybrid transmission method combines the respective advantages of optical fibers and coaxial cables, providing users with high-quality, efficient data, video, and audio transmission services.