These cables are suitable for all fiber optic applications in various areas of telecommunications. Typical application areas include patching in data centers, server or network cabinets, as well as FTTH (Fiber to the Home). By using single-mode ferrules for the Lightwin multimode patch cables and specially selected ferrules with minimal tolerances for the Lightwin single-mode patch cables, attenuation values are achieved that far exceed the required standards according to ISO/IEC. Equivalent terms for fiber optic patch cables may include patch cords, adapter cables, connection cables, and jumpers. While a conventional signal in a copper cable can be subject to electrical interference, fiber optic cables operate with light. Therefore, they cannot be influenced by external electromagnetic disturbances, nor do fiber optic cables affect other lines or signals, as they emit no radiation. Additionally, due to the low attenuation of the optical cables, distances of well over 100 km can be covered without optical amplification. The LC connector is a high-performance fiber optic connector for single-mode and multimode applications, featuring an insertion loss of only 0.1 dB and a return loss of 55 dB. The design of the LC connector is based on a single-fiber ceramic ferrule with a diameter of 1.25 mm for a light waveguide.