With the development of technology, fiber to the loss has increasingly stringent requirements, fiber optic manufacturer in china is also doing their efforts for 10G fiber network requires total link loss control in 2.6dB below, but 10M and 100M fiber optic network will be a lot of loss requirements are relatively relaxed, which so that the original fiber link network can easily be implemented almost run. However, if the rate is raised to.
 
when 1G and 10G, the original minimum loss will not necessarily be applied to new applications,many fiber optic cable supplier has realized that it need to use fiber-optic test parameters to quantify the loss tests to determine whether to support the standard. In addition, high speed fiber optic network itself requests, the cable is also divided into different categories, in order to increase the rate, the optical fiber itself is required to support higher bandwidth mode, especially for widely used LAN multimode optical fiber as shown in Table 1 as shown, the different modal bandwidth corresponding link length is different, and their corresponding maximum loss is different, in other words, not only the loss of qualified link to be tested to ensure the network can support 10G, must also have a pattern corresponding to the bandwidth.
 
In addition to the above-mentioned loss, length, pattern bandwidth, as well as the dispersion should be noted when you are going to buy the best fiber optic adaptor that we have a lot of light sources to switch interface VCSEL light from the LED light source, is to reduce the dispersion, to avoid over-development signal is wide, the same used in the test, for a more realistic evaluation of the performance of the cable, for the 50μm fiber is recommended test also uses a VCSEL light source to be tested.