Some new customers have broken a device of another brand and want to buy a device to replace. They always ask, "Should optical transceivers be used in pairs?". The answer is correct. In fact, optical transceivers must be used in pairs. Optical transceivers are used in optical and electrical converters that use optical fibers as the carrier. The sender and receiver must be the same device. So optical transceivers should be used in pairs, why should they be used in pairs? Next, let's follow the editor of Feichang Technology to learn more about it!
Optical transceiver is a terminal device for optical signal transmission, and optical transceiver is an optical fiber communication device that extends data transmission. Optical transceivers are divided into optical transmitters and optical receivers, which are generally used in pairs. The optical transmitter completes the electrical-optical conversion and transmits the optical signal for optical fiber transmission. The optical receiver mainly restores the optical signal received from the optical fiber to an electrical signal to complete the photoelectric conversion. So generally speaking, optical transceivers must be used in pairs.
General point-to-point optical transceivers are used in pairs. If it is 1 point-to-multipoint, it is not used in pairs. The network is laid according to the actual situation. At present, 90% of the projects are generally used in pairs.
Node-type optical transceiver is also called bus-type optical transceiver. Its accurate definition is an image transmission system in the form of single/dual fiber link networking, which is also called link-type optical transceiver. The technology used is the time division multiplexing (TDM) and add-drop multiplexing (ADM) technologies commonly used in telecommunications, which have the advantages of saving optical fiber resources and extending the transmission distance.
1. There are two design principles of node optical transceiver, one is TDM is time division multiplexing, the other is WDM is wavelength division multiplexing, no matter what kind of equipment, the equipment at each point must be different;
2. The transmission process of the node optical transceiver: Transmitter 1 - Optical fiber - Transmitter 2 - Optical fiber - Transmitter 3 - Optical fiber - Receiver;
3. The transmission process of point-to-point optical transceiver: transmitter-------optical fiber-----receiver.
Summary: The use of optical transceivers are basically in pairs, placed at both ends of the optical cable, one is to convert optical signals into electrical signals, the other is the opposite, and finally converted into analog signals for processing equipment. Through photoelectric conversion, video, audio, Ethernet and other signals can be transmitted to a longer distance to meet higher needs. In addition, there are many brands of optical transceivers in China. Generally, optical transceivers produced by different manufacturers cannot be mixed and used in pairs. It is recommended that consumers buy the same brand in pairs.