Submarine fiber-optic cables are a remarkable innovation that serves as the foundation of modern Internet connectivity. These cables, located on the bottom of the sea, are highly advanced infrastructure that connects Internet networks between islands, countries, and even continents, allowing for fast data transfer with huge capacity. So, how do these submarine cables manage to transfer such vast amounts of data at high speeds? Here’s the explanation!

Using Fiber Optic as the Main Medium
Made from fine glass or plastic, fiber optic is highly efficient and very smooth at transmitting light. Each fiber in an optical cable can carry a massive amount of data in the form of light signals. These signals move through the core of the fiber at speeds approaching the speed of light, enabling extremely fast and large-scale data transfers. Compared to conventional copper cables, optical fibers also offer much larger bandwidth. Each fiber can carry terabytes of data per second, and with multiplexing technology, a single cable can carry a tremendous amount of data.

Advanced Technologies Driving Performance
The ability to carry terabytes of data per second in submarine cables is supported by a technology called Wavelength Division Multiplexing (WDM), which allows multiple data signals to be transmitted through a single fiber optic using different wavelengths of light. In this way, one fiber optic can carry hundreds to thousands of data channels simultaneously. Additionally, there is a more advanced technology that can accommodate even more data, known as Dense Wavelength Division Multiplexing (DWDM), which has the advantage of being able to provide higher bandwidth. With DWDM, multiple wavelengths of light are transmitted simultaneously through a single fiber optic cable. This allows for a significant increase in the capacity of fiber optic cables where this capability is critical in meeting the increasing demand for high speed and high bandwidth data services.

Biznet Submarine Cable Network
Biznet has recently launched the first submarine fiber optic cable network named Biznet Nusantara Cable System (BNCS-1), that connects networks between Java, Sumatra and Bangka Islands. BNCS-1 network consists of 24 pairs (48 cores) of Fiber Optic using the latest Dense Wavelength Division Multiplexing (DWDM) technology. Each 1 pair (2 cores) of Fiber Optic cable can transmit data of 96 x 400 Gbps = 38.4 Tbps. It means that with 24 pairs, BNCS-1 network has a total capacity of 24 x 38.4 Tbps = 921.6 Tbps. The capacity of this network can be increased in accordance with developments of DWDM technology.

For more information, you can visit biznet.id/metronet or simply reach our Biznet Representative.