As we all know, most optical modules are used in the backbone network in the optical network. An optical transceiver is just a device that extends the network cable. Generally speaking, there are not many single-mode devices above 20KM, 25KM, 40KM, and 60KM. The demand for ultra-long distances is usually small. At present, 10/100M adaptive and 1000M adaptive are widely used, but they are not used in many occasions.
Optical terminal
Multimode cables are rarely used now. The cost of single-mode cables is not higher than that of multimode cables, and multimode cables are generally within 2km. The transceiver also includes built-in power supply and external power supply, and the fiber optic ports include single fiber, dual fiber, centralized, and single fiber. In short, they are selected according to customer needs and occasions.
For example, if you open an Internet cafe, for example, if you want to open 10M bandwidth from a telecom operator, they will pull the optical cable from the telecom data room to your Internet cafe, and then both parties will connect the fiber optic transceiver. The other end of the fiber optic transceiver is connected to the network cable, and the network cable is connected to the data room and Internet cafe switches or routers respectively. You can distribute the network cable to each machine through the switch.
Differences between optical modules and optical transceivers
1. Optical modules are accessories, usually only used in switches and devices with optical module slots. Optical transceivers belong to equipment and can be used independently.
2. Optical modules support hot plugging and flexible configuration. Optical transceivers belong to fixed specifications and are difficult to replace and upgrade.
3. The optical module is powered by the supporting equipment, and the optical transceiver plus power supply can be used independently.
Gigabit single optical module
Connecting the optical transceiver with the optical module
1. The speed of the optical module and the optical transceiver must be the same, hundreds of megabytes, gigabytes, gigabits.
2. The wavelength must be the same. Both are 1310nm or 850nm
3. Single fiber to single fiber, dual fiber to dual fiber.
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