A1 is a single-mode fiber with a smaller bending radius than G. A2 is used primarily in outdoor applications. This method is in accordance with the rounding method of ASTM Practice E29 (Standard Practice for using significant di(1) guaranteed value according to the ITU-T (ATM G650) method. Specifications are for product as supplied by Prysmian: any modification or alteration afterwards. Our **Silica Core Singlemode Fiber** is engineered to deliver exceptional performance in a variety of networking applications. Therefore, you will typically use the G652D fiber with the G657A2 fiber in enclosed spaces. As a reliable high-performance bending insensitive single mode fiber, G657A1 has superior bending performance compared to G652D fiber. Ground and conduit fiber-optic cables are outdoor network cables, designed to be laid directly in the ground or in tele-technical conduits.
