Fiber optic transceivers include both a transmitter and a receiver in the same component. These are arranged in parallel so that they can operate independently of each other. Both the receiver and the transmitter have their own circuitry so that they can handle transmissions in both directions. Fiber optic transceivers can interface with two types of cables, single mode and multimode. Single mode is an optical fiber that will allow only one mode to propagate. The fiber has a very small core diameter of approximately 8 μm. It permits signal transmission at extremely high bandwidth and allows very long transmission distances. Multimode describes a fiber optic cable, which supports the propagation of multiple modes. Multimode fiber may have a typical core diameter of 50 to 100 μm with a refractive index that is graded or stepped. It allows the use of inexpensive LED light sources and connector alignment and coupling is less critical than single mode fiber. Distances of transmission and transmission bandwidth are less than with single mode fiber due to dispersion. Some fiber optic transceivers can be used for both single mode and multimode cables. Common connector types for fiber optic transceivers include Biconic, D4, ESCON, FC, FDDI, LC, Loopback, MTP, MT-RJ, MU, SC, SMA, and ST. General performance specifications to consider include wavelength, operating voltage, data rate, and bandwidth. Application: Suitable for expansion 10M to 100M bandwidth corporate network Applied to images, voice and other multimedia data integrated transmission network Widely used in computer data transmission network to meet various business needs Point applies to the computer in need of signal transmission occasions Suitable for broadband network, broadband cable networks and Intelligent Community of the fiber to the building, fiber to the home