There are two fiber optic cables

Two fiber optic cables are typically used in full-duplex systems to allow simultaneous bidirectional communication, enhancing network efficiency.Why Two Cables Are UsedFiber optic communication can operate in either half-duplex or full-duplex modes. In a half-duplex system, a single fiber is used, and data transmission alternates between sending and receiving signals, meaning communication cannot occur simultaneously in both directions. In contrast, a full-duplex system uses two fibers: one fiber transmits data from point A to point B, while the other transmits data from point B to point A. This setup allows both ends to simultaneously send and receive data, improving communication speed and efficiency .Technical ConsiderationsCore and Cladding: Each fiber consists of a glass or plastic core surrounded by cladding, which ensures light signals are contained and transmitted efficiently over long distances .Signal Quality: Using two fibers reduces the need for complex switching mechanisms required in half-duplex systems, minimizing latency and potential signal collisions .Applications: Full-duplex fiber configurations are common in data centers, enterprise networks, and telecommunications, where high-speed, reliable, and continuous bidirectional communication is essential .SummaryUsing two sets of fiber optic cables is primarily a design choice to support full-duplex communication, allowing simultaneous transmission and reception of data. This configuration enhances network performance, reduces latency, and is widely adopted in high-speed networking environments where efficiency and reliability are critical .