|
|||
| What should be paid attention to when selecting fiber optic cable? Fiber optic cable selection, in addition to the number of fiber core and fiber types, but also in accordance with the use of fiber optic cable to select the outer sheath. Optical fiber cable manufacturers said that in the selection of fiber optic cable should pay attention to the following points: 1. when outdoor cables are buried directly, armored fiber optic cables should be used. When in the overhead, we can choose the black plastic outer sheath with two or more reinforcing ribs. (Introduction: types of cables) 2. the fiber optic cable used in buildings should pay attention to its characteristics of flame retardance, poison and smoke. Generally in the pipeline and forced ventilation, flame retardant but smoke type, exposed environment should be selected flame retardant, smokeless and non-toxic type. 3. vertical wiring in the building, you can choose layer Cables fiber optic cable (Distribution Cables); horizontal wiring type, you can choose Breakout fiber optic cable. (product recommendation: BOC- multi-purpose branch optical fiber cable) Fiber optic cable manufacturer 4. transmission distance of less than 2Km, multi-mode light can be used, more than 2Km can be used to relay or select single-mode fiber optic cable. The above is to put aside the cable itself price and quality factors, single from the application should pay attention to several problems. Implementation needs to be flexible. In fact, the wiring environment is complicated, various problems may occur at any time, which we need in the planning and construction in strict accordance with the standard wiring implementation, problems of flexible analysis, that will solve the problem successfully. Single mode fiber (SM): single-mode fibers transmit only primary modes, that is, light travels only along the inner core of the fiber. Due to completely avoid the mode dispersion makes the transmission bandwidth of single-mode fiber and a wide application and high capacity, long distance optical fiber communication. Single-mode fibers use light wavelengths of 1310nm or 1550 nm. Multimode fiber (MM): under certain operating wavelengths (850nm/1300nm), multiple modes are transmitted in the fiber, which is called multimode fiber. Because of dispersion or aberration, the transmission performance of this kind of optical fiber is poor, the frequency band is narrow, the transmission capacity is relatively small, and the distance is relatively short. |
|||
