With the development of science and technology, the speed of urban informatization is accelerating, and the requirements for communication technology are becoming higher and higher. Optical fibers are becoming more and more popular in communication because of their advantages of fast transmission speed, long distance, safety and stability, anti-interference, and convenient expansion. First choice when laying. We often see that the long-distance data transmission requirements in building intelligent projects basically use optical fiber transmission. The link between this requires optical modules and fiber optic transceivers.
The difference between optical module and optical fiber transceiver:
1.The optical module is a functional module, or accessory, is a passive device that cannot be used alone. It is only used in switches and devices with optical module slots; the optical fiber transceiver is a functional device and is a separate active The device can be used alone with the power supply;
2.The optical module itself can simplify the network and reduce the point of failure, and the use of optical fiber transceivers will add a lot of equipment, greatly increasing the failure rate and occupying the storage space of the cabinet, which is not beautiful;
3.The optical module supports hot swapping, and the configuration is relatively flexible; the optical fiber transceiver is relatively fixed, and replacement and upgrade will be more troublesome than the optical module;
4.Optical modules are more expensive than optical fiber transceivers, but they are relatively stable and not easily damaged; optical fiber transceivers are economical and practical, but many factors such as power adapters, fiber status, and network cable status must be considered. Transmission loss accounts for about 30% ;
In addition, pay attention to several points when connecting the optical fiber module and the optical fiber transceiver: the wavelength and the transmission distance must be the same, for example, the wavelength is 1310nm or 850nm at the same time, the transmission distance is 10km; the fiber jumper or pigtail must be the same interface to connect, Generally, the optical fiber transceiver uses the SC port, and the optical module uses the LC port.This point will prompt the choice of interface type when purchasing. At the same time, the rate of the optical fiber transceiver and the optical module must be the same, for example, the Gigabit transceiver corresponds to a 1.25G optical module, 100M to 100M, and Gigabit to Gigabit; the optical fiber type of the optical module must be the same, single fiber to single fiber, Dual fiber to dual fiber.