Selection of fiber optic cable fiber count and fiber type thinking, but also based on the use of fiber optic cable to select the cable outer sheath. The choice should note the following:
Outdoor fiber optic cable directly buried, should use the Kay-like fiber optic cable. Overhead, can be used with two and multiple ribs, black plastic outer sheath of the fiber optic cable.
2 fiber optic cable within the building should be noted that in the selection of the characteristics of the flame retardant, drugs and cigarettes. Can be used generally in the pipe and forced ventilated place retardant but the type of smoke exposure environment should choose the type of flame retardant, smoke-free and non-toxic.
Building vertical wiring, you can choose the layer stranded cable (Distribution Cables); horizontal cabling type, the choice of a branch cable (Breakout Cables).
Transmission distance within 2Km, the choice of multi-mode light, more than 2Km available relay or the selection of single-mode fiber optic cable.
Above is a fiber optic cable price and quality factors aside, it should be noted that several issues to consider from the applications alone. Implementation needs to be flexible. In fact, the wiring environment is complex and diverse problems may arise, which in the planning and construction in strict accordance with the cabling standards implementation, has encountered a problem and flexible analysis, I believe will be a satisfactory solution to the problem.
Single-mode fiber (SM): single-mode fiber transmission only the dominant mode, which means that the light was along the inner core of the fiber transmission. Completely avoid the mode shot scattered makes the single-mode fiber transmission band width and thus for large-capacity, long-distance optical fiber communication. Single-mode fiber using optical wavelength 1310nm or 1550 nm.
Multimode fiber (MM): in a certain wavelength (850nm/1300nm), there are multiple modes in optical fibers, this fiber is called multimode fiber. Due to dispersion or aberration, this optical fiber transmission performance of poor band is quite narrow, the transmission capacity is relatively small, the distance is relatively short.