Network cards are divided into single-mode network cards and multi-mode network cards according to the configured optical modules. How to distinguish single-mode and multi-mode optical fiber network cards is to distinguish whether the configured optical modules are single-mode or multi-mode.
For single-mode optical modules with a transmission distance of more than 2km, the fiber diameter is 9/125μm. Single-mode optical modules are optical modules used with single-mode optical fibers. The logo on the single-mode optical module is "SM", the module pull ring is mostly blue, and the color of the fiber is yellow, mainly at 1310nm and 1550nm wavelengths. Single-mode optical modules are mostly used for long-distance transmission such as LR, ER, and ZR.
Fiber network card
Due to the serious dispersion between modes, multimode optical modules can only be used for short-distance transmission. If the transmission distance is less than 2km, the fiber diameter is generally 50/125μm or 62.5/125μm, which is called multimode modules; multimode optical modules are related to For optical modules used with multimode fibers, the module pull ring is mostly black, and the color of the fiber is orange, mainly at the wavelength of 850nm.
The bandwidth potential of single mode in single-mode optical modules makes it the best choice for high-speed and long-distance data transmission. It is mostly used for long-distance transmission such as LR, ER/ZR, and lines with relatively high transmission rates, such as long-distance trunk transmission. , MAN construction, etc.
Wide range of application fields, including various broadband data networks such as telecommunications, cable TV, railways, military, financial securities, customs, civil aviation, shipping, electric power, water conservancy and oil fields, and fields that require high-reliability data transmission or the establishment of IP data transmission private networks It is the most ideal application equipment for broadband campus network, broadband cable TV network and intelligent broadband community fiber-to-the-building and fiber-to-the-home.
Multi-mode optical modules are mostly used in networks with relatively low transmission rates and relatively short transmission distances, such as local area networks, etc. Such networks usually have many nodes, many joints, many detours, large amounts of connectors and couplers, and units. The length of the optical fiber uses the characteristics of a large number of light sources. The use of multi-mode optical modules can effectively reduce network costs; single-mode optical modules are mostly used in lines with long transmission distances and relatively high transmission rates, such as long-distance trunk transmission and metropolitan area network construction. Wait.
