What type of single-mode fiber is specifically designed for Fiber to the Home (FTTH) installations?

The single-mode fiber designed specifically for Fiber to the Home (FTTH) installations is ITU-T G.657 BiF. This type of fiber is engineered to be more flexible and reliable for the challenges associated with FTTH applications, particularly in environments where tighter bends and routing may be necessary. ITU-T G.657 fibers can maintain their performance even when subjected to sharp bends, which is a common requirement in residential installations where space may be limited.

In addition, G.657 fibers are compatible with conventional G.652 fibers, ensuring that there is a seamless integration between the existing infrastructure and new installations. This compatibility is crucial in FTTH deployments where existing networks may already consist of G.652 fibers, allowing for easier upgrades and expansions without the need for completely replacing the infrastructure.

The other types of fibers mentioned serve different purposes. For instance, ITU-T G.652 is a standard single-mode fiber widely used in long-distance telecommunications but does not have the same bending capabilities as G.657. ITU-T G.655 is optimized for transmission over larger distances in environments with higher bandwidth needs, while ITU-T G.Fast pertains to a technology focused on high-speed digital subscriber lines, not fiber itself. Thus, G.657 BiF