Transmission distance
The transmission distance supported by different optical modules is different. Generally speaking, the transmission distance of multimode optical modules is much shorter than that of single mode optical modules, and the price is also cheaper. The maximum transmission distance can only reach 400m, and the transmission distance of a 10GBASE-LR SFP+ optical module can reach 10km, so it is very important to figure out the transmission distance you want to achieve. In addition, the attenuation and dispersion of the optical signal during transmission must also be considered. It is recommended that you use an optical module that supports a transmission distance slightly greater than the actual demand. For short-distance connections between devices in the rack, it is recommended that you use high-speed cable products that are cheaper than optical modules.
Transmission mode
There are three main data transmission methods for optical modules: simplex, half-duplex and full-duplex. Simplex transmission only supports data transmission in one direction; half-duplex transmission allows data transmission in both directions, but at a certain moment Only data transmission in one direction is allowed; full-duplex transmission allows data transmission in both directions simultaneously. It is best to choose an optical module that supports full-duplex transmission.
Transmission medium
Copper and optical cables are currently the two most widely used transmission media. Therefore, some optical modules are designed with electrical ports, and some optical modules are designed with optical ports. Generally speaking, optical port optical modules are commonly used in 10G and 40G Ethernet transmission applications, while electrical port optical modules are used in 100M and Gigabit Ethernet applications, and the transmission distance of optical port optical modules is father than that of electrical port optical Module.
Heat resistance
The working environment temperature of the optical module should not be too high. If the temperature exceeds the temperature that the optical module can withstand, there is a possibility of link failure. Therefore, an optical module with good heat resistance should be selected.
The above points are common factors when purchasing optical modules. In addition, aspects such as operating wavelength, operating rate, and manufacturer's brand also need to be considered. HTF is a professional optical module supplier. We provide various optical module solutions to meet your different needs. For more details, please visit our official website www.htfwdm.com
