The AFL FR1-SM-150-LC-SC is a top-tier singlemode fiber ring designed specifically for effective OTDR operations, enabling precise measurement of insertion loss and reflectance in fiber optic links. With a length of 150 meters, this cable is available in various diameters, including 3.0 mm, 2.0 mm, 1.6 mm, and 900 m, ensuring compatibility with different setups. Its bend insensitive options and selection of common connector styles, such as LC and SC, enhance its versatility for diverse applications. Moreover, the cable is crafted to meet rigorous standards, including Telcordia GR-409 and GR-326, while being compliant with RoHS regulations, making it suitable for a wide range of environments, including riser, plenum, and LSZH-rated installations. Built as a compact launch and receive solution, this fiber ring is engineered for reliability in demanding testing and splicing applications.