Do fiber optic transceivers have to be used in pairs?Is there a split in the fiber transceiver?Or just a pair of fiber optic transceivers can be used to form a pair? If the fiber transceivers must be used in pairs, is it necessarily the same brand and model? Or can you use any combination of brands?
Answer: Optical transceivers are generally used in pairs as photoelectric conversion devices. However, it is also possible to use optical transceivers and fiber switches, fiber transceivers and SFP transceivers. In principle, as long as the optical transmission wavelength is the same, Fiber-optic communication can be achieved by the same signal encapsulation format and supporting a certain protocol.
Generally, the dual-fiber (two fibers required for normal communication) transceivers are not divided into the transmitting end and the receiving end. Only the single-fiber transceiver (which requires one fiber for normal communication) will have the transmitting end and the receiving end.
Whether it is a dual-fiber transceiver or a single-fiber transceiver, it is compatible to use different brands in pairs. However, different rates (100 megabits and gigabytes) and different wavelengths (1310 nm and 1300 nm) are not compatible with each other. In addition, even a single-fiber transceiver of the same brand and a pair of dual-fiber and dual-fiber pairs are not Can be interoperable.
The dual-fiber transceiver has a TX port (transmitting port) and an RX port (receiving port). Both ports emit the same wavelength of 1310 nm, and the receiving is also 1310 nm, so the parallel two fibers are connected in cross-connection.The single-fiber transceiver has only one port, which implements both the transmitting function and the receiving function. It uses the wavelength division multiplexing technology to transmit and receive two optical signals of different wavelengths on one optical fiber. Generally they use wavelengths of 1310 nm and 1550 nm.
Different brands of optical transceivers support Ethernet protocols. They can communicate with transceivers of the same specification, but some transceivers add some functions (such as mirroring) and support some protocols. In the case of the case is not supported.