What factors should be considered to choose a light module.onu epon gpon modem sales

With the rapid development of the communications industry and domestic and foreign data centers, the demand for light modules has increased sharply. In addition to the original light module of the equipment vendor, there are third -party light module manufacturers, so should we choose the light module like this? When we choose the light module, in addition to considering the type of light module, we need to consider its cost -effectiveness.

Transmission distance

The transmission distance supported by different light modules is different. Generally speaking, the transmission distance of the multi-module module is much shorter than the transmission distance of the single-mode light module, and the price is cheaper. For example, a 10GBASE-SR SFP+optical module The longest transmission distance can only reach 400m, and the transmission distance of a 10GBASE-LR SFP+optical module can reach 10km. Therefore, it is very important to find out that the transmission distance you want to achieve is very important. In addition, considering the attenuation and dispersing of the light signal during the transmission process, it is recommended that you use the light module with the supported transmission distance slightly greater than the actual requirements. For the short -distance connection between the equipment in the rack, it is recommended that you use a high -speed cable product that is cheaper than the light module.

Transmission mode

There are three main data transmission methods: single workers, half -dual -workers, and full -duplex. Single -work transmission only supports data in one direction; all -dual -work transmission allows data to transmit data at the same time in two directions. It is best to choose the light mode transmission that supports full dual -work transmission; half -dual -work transmission allows data transmission in two directions, but only allows one data transmission block to one direction at a certain moment.

Transmission medium

Copper cables and optical cables are currently the two most widely used transmission media. Therefore, some optical modules are designed by the power port, and some optical modules are designed by the optical port. Generally speaking, the optical module is commonly used in 10G and 40G Ethernet transmission applications, while the electric port light module is used in the application of 100M and Gigabit Ethernet, and the transmission distance of the optical module of the optical port is generally compared to the electric port light module Far.