When we transmit over long distances, we usually use optical fibers to transmit. Because of the long transmission distance and anti-interference characteristics of optical fiber, generally the transmission distance of single-mode optical fiber is more than 10 kilometers.
The transmission distance of multimode fiber transceivers can also reach 2 kilometers. In fiber optic networks, we often use fiber optic transceivers.
So, do the fiber optic transceivers have to be used in pairs? Can the fiber optic transceiver be divided into one for receiving and one for sending? Let's take a look at this together.
When using fiber optic transceivers, the following questions will arise:
1. Do fiber optic transceivers have to be used in pairs?
2. Can the optical fiber transceiver be divided into one for receiving and one for sending? Or is it just two fiber optic transceivers that can be used as a pair?
3. If the optic fiber transceivers must be used in pairs, do they have to be the same brand and model? Or can any brand be used in combination?
1. Do fiber optic transceivers have to be used in pairs?
In fact, fiber optic transceivers, as photoelectric conversion devices, are generally used in pairs, but the following cases of use can also occur: fiber optic transceivers plus fiber optic switches, and fiber optic transceivers plus SFP transceivers are also normal.
In principle, optical fiber communication can be realized as long as the optical transmission wavelength and signal encapsulation format are the same and all support a certain protocol.
2. Is the fiber optic transceiver divided into a transmitter and a receiver?
Generally, single-mode dual-fiber (two fibers are required for normal communication) transceivers are not divided into transmitter and receiver. As long as they appear in pairs, they can be used. Only a single-fiber optical fiber transceiver (one fiber is required for normal communication) will be divided into the transmitter and the receiver.
3. Can different brands be used in combination?
Whether it is a dual-fiber transceiver or a single-fiber transceiver, it should be used in pairs. Even if the fiber optic transceiver brands are different, as long as the speed, wavelength, and mode are the same, they are compatible and interoperable.
For example: one hundred megabyte and Gigabit, wavelength 1310nm and wavelength 1300nm cannot communicate with each other. In addition, even if they are of the same brand, a single-fiber transceiver and a dual-fiber pair cannot communicate with each other.
The single-fiber transceiver uses a single-mode optical cable. The single-fiber transceiver uses only one core, and both ends of it are connected to this core. The both ends of the transceivers use different optical wavelengths, so they can transmit optical signals in one core.
The dual-fiber fiber optic transceiver uses two cores, one for sending and one for receiving. If one end of the dual fiber optical transceiver is sending, then the other end must be plugged into the receiving port, that is, the two ends must be crossed.
