SM Fiber can support distance value as high as 80 km or even 120 km Required on WAN connectivity like Service provider Handoff to office/Data Center or connectivity between offices. The colour coded bale clasp and colour arrow on label are generally blue, yellow or purple. However, the core diameter in a single-mode fiber is quite small. This means SMF against MMF can carry a higher bandwidth at a longer distance to. Fiber optic transmission distance is influenced by the operating wavelength, with common options being 850nm, 1300nm, and 1550nm. Multimode fiber typically operates at 850nm and 1300nm, supporting short-distance communication due to higher attenuation and modal dispersion. Due to the small core, only one optical mode is allowed to be transmitted. This characteristic enables single-mode fibers to transmit signals over long distances with low mode dispersion (mode. Single Mode 9/125 fiber optic cable is a widely used solution for high-speed and long-distance data transmission. Single mode cable is commonly used in long-haul, high-speed communication systems, such as telephone and cable. As of 2005, data rates of up to 10 gigabits per second were possible at distances of over 80 km (50 mi) with commercially available transceivers (Xenpak).