In fact, single-mode optical modules and multi-mode optical modules not only use different types of optical fibers, but are also very different in other aspects, as shown below:

　　Transmission distance:

　　Single-mode optical modules are usually used for long-distance transmission, and single-mode optical modules with different fiber wavelengths have different transmission distances. For single-mode optical modules, the optical fiber with a wavelength of 1310 nanometers has large loss and small dispersion during transmission, and the transmission distance is usually within 40 kilometers, while the single-mode optical module with a fiber wavelength of 1550 nanometers has low loss and large dispersion during transmission. , the transmission distance is usually more than 40 kilometers, and the longest can reach 40 kilometers. Multimode optical modules are usually used for short-distance transmission, and the transmission distance is usually between 300 and 500 meters.

　　Application range:

　　According to the above introduction, single-mode optical modules are usually used in networks with long transmission distances and fast transmission speeds, such as urban area networks and passive optical fiber networks. However, multi-mode optical modules are usually used in networks with short transmission distances and low transmission rates, such as data center computer rooms and local area networks.

　　illumination:

　　Single-mode optical mode is not the same as multi-mode optical module. Single-mode optical modules use LED or laser, LD or LED multi-mode optical modules.

　　power:

　　The power consumption of single-mode optical modules is usually higher than that of multi-mode optical modules, but the power consumption of optical modules mainly depends on the parameters, models and brands of the optical modules, so the power consumption of single-mode optical modules with different parameters, models and brands is the same.

　　price:

　　Compared with multi-mode optical modules, single-mode optical modules use a large number of equipment and a large amount of laser light sources. The price of single-mode optical modules is also higher than that of multi-mode optical modules.