What’s the Difference Between G.652 and G.657?

G.657 fiber is designed to be compatible with G.652 fiber but is less bend-sensitive, which means it produces lower levels of attenuation due to bends. G.657 fiber is split into two parts: category A for access networks and category B for the end of access networks in bending-rich environments. Each category (A and B) is divided into two subcategories: G.657.A1 and G.657.A2, G.657.B2 and G.657.B3. We can see the bending radii of G.652 fiber and different G.657 fibers.