How To Quickly Distinguish Single-mode And Multi-mode Fiber Optic Transceivers?

- Nov 18, 2020-

Nowadays, the application range of fiber optic transceivers is becoming more and more extensive, but most brands of fiber optic transceivers on the market have similar appearances. Then, how do we distinguish between single-mode and multi-mode fibers when using fiber optic transceivers? What about the transceiver? Then follow the editor of HRUI to learn more about it!


There are single-mode and multi-mode transceivers, the most fundamental difference is the transmission distance. The working mode of the single-mode optical fiber transceiver is single-node, one-port signal transmission, so the signal transmission distance is relatively long, forming the construction of a cross-city area LAN.


Multi-mode fiber optic transceivers are just the opposite. Their working mode is multi-node, multi-port signal transmission, so the signal transmission distance is relatively short, but the price is low and easy to use, and it is mostly used for the construction of local area networks.


How to distinguish single-mode and multi-mode fiber optic transceivers?


1. Check if there are S and M in the model. S (single) means single mode, and M (multimode) means multimode.


2. From the perspective of transmission mode, the single-mode optical fiber transceiver receives and transmits data on the same optical fiber, while the multi-mode optical fiber transceiver is on two optical fibers.


3. Unplug the dust cap of the optical port of the fiber optic transceiver and look at the color of the interface components inside. Generally, the inner side of the TX and RX interfaces of the single-mode transceiver are coated with white ceramic, and the interface of the multi-mode transceiver is brown.


4. In terms of transmission distance, the transmission range of single-mode optical fiber transceiver is between 20 kilometers and 120 kilometers, while the multi-mode optical fiber transceiver is between 2 kilometers and 5 kilometers.


5. If it is an optical fiber transceiver that has been used, it can be distinguished by the color of the optical fiber jumper. The yellow jumper generally represents single mode, and the orange-red jumper generally represents multimode.


Well, the above are some methods of how to distinguish between single-mode and multi-mode fiber transceivers compiled by HRUI editor for everyone. In fact, there is no good or bad difference between the two, but the applicable network environment is different. Choose according to the use environment. It should be noted that single-mode transceivers can work normally under single-mode fiber and multi-mode fiber, but multi-mode fiber transceivers cannot work under single-mode fiber.


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