Dark fiber意思

"Dark fiber" is a term used in the telecommunications industry to refer to unused optical fiber cable that has been installed but is not currently in service. These fibers are typically part of a larger fiber optic network and are not carrying any data or communications traffic.

The term "dark" refers to the fact that the fibers are not "lit up" by the presence of a light source, as they would be if they were in use. This unused capacity can be leased or sold to other companies or organizations that need high-speed data transmission capabilities.

Dark fiber is often used by internet service providers, telecommunications companies, and large enterprises to connect data centers, offices, and other facilities. It can also be used to provide high-speed internet access to residential customers.

One of the advantages of dark fiber is that it can offer very high data transmission speeds and low latency, which is the time it takes for data to travel from one point to another. This makes it ideal for applications that require a lot of bandwidth, such as streaming video, online gaming, and cloud computing.

However, dark fiber can also be more expensive to implement and maintain than other types of data transmission infrastructure, such as coaxial cable or copper wire, because it requires specialized equipment to "light up" the fibers and to manage the data traffic.