Optimal Fiber Connections: BlueOptics Fiber Optic Patch Cable with LC/APC to LC/APC Simplex Connector and Singlemode Fiber (SMF) of fiber category Singlemode G.657.A1 (fiber type E9/125µm), in yellow. BlueOptics LC-LC Singlemode G.657.A1 Simplex Patch Cables feature a flame-retardant LSZH jacket. These cables are designed for the transmission of 1310nm / 1550nm signals and are suitable for connecting patch panel ports or for connecting optical transceivers. The attenuation values are excellent: BlueOptics Singlemode G.657.A1 LC-LC Simplex Patch Cables have an attenuation value of 0.4dB per kilometer, low insertion loss, and high return loss. Custom lengths are also available upon request. The highest quality components ensure loss-free transmission performance.