Fiber optic cable has become the backbone of modern communication networks, supporting high-speed internet, telecommunications, data centers, 5G infrastructure, industrial automation, and smart cities. Compared with traditional copper cables, fiber optic cables provide higher bandwidth, lower signal loss, longer transmission distances, and better resistance to electromagnetic interference.

In today's high-speed communication networks, fiber patch cord has become one of the most important components for connecting optical devices, network equipment, and fiber distribution systems. From data centers and telecommunications networks to FTTH (Fiber to the Home) deployments and enterprise communication systems, fiber patch cords provide reliable, high-performance optical connections.

With the large-scale deployment of FTTH Fiber to the Home, AI computing data centers, 5G fronthaul, indoor comprehensive wiring, FPV drone miniature communication and building weak current renovation worldwide, traditional G.652D single-mode fiber is plagued by severe bending loss and limited wiring space, which seriously restricts the layout of high-speed optical communication networks. Formulated by ITU-T, the G.657 series bend-insensitive single-mode fiber is specially developed for narrow turning corners, dense wiring and micro-pipeline scenarios. The three mainstream product grades, G.657.A1 standard bend-resistant fiber, G.657.A2 enhanced bend-resistant fiber and G.657.B3 ultra-bend-insensitive fiber, adopt differentiated trench-assisted refractive index profiles, and present graded differences in minimum bending radius, mode field diameter and attenuation performance. They cover full-scenario demands from economical household wiring to ultra-compact special wiring.