When it comes to photoelectric converters, we all know that the photoelectric converter is a device similar to a baseband MODEM (digital modem). Unlike the baseband MODEM, it is connected to an optical fiber dedicated line and an optical signal, which is divided into full-duplex flow control. , half-duplex back pressure control. So, what are the characteristics of photoelectric converters? What is the difference between an optoelectronic converter and a fiber optic transceiver?
Optical-to-Electrical Converters and Fiber Optic Transceivers
What are the characteristics of photoelectric converters
1. Flexible configuration of optical ports, support SC/ST/LC, single-mode/multi-mode
2. Low-voltage redundant DC dual power supply or AC power supply
3. IP30 and above protection level
4. The working temperature can support -40℃～75℃
What is the difference between photoelectric converters and fiber optic transceivers
In the optical fiber network transmission, many people will confuse the fiber optic transceiver and the fiber optic converter and cannot distinguish the relationship between the two. Therefore, the previous experience of the user is summarized here, and the fiber optic transceiver and the fiber optic converter are introduced in the network. use in the process. The optical fiber transceiver converts the twisted pair electrical signal and the optical signal to each other, and the twisted pair is greatly affected by electromagnetic interference, which undoubtedly greatly affects the quality of data communication.
The use of optical fiber transceivers converts the connection medium in Ethernet into optical fibers. It ensures the smooth transmission of data packets between the two networks, and at the same time, it extends the transmission distance limit of the network from 100 meters of copper wire to 100 kilometers (single-mode fiber), which can easily implement motherboard servers, repeaters, hubs, terminals The interconnection between the machine and the terminal.
The optical transceiver works at the data link layer, and uses the store-and-forward mechanism to read its source MAC address, destination MAC address and data payload for each received data packet, and complete the CRC cyclic redundancy check. The packet is forwarded after verification.
It can prevent some erroneous frames from spreading in the network, occupying valuable network resources, and can also prevent the loss of data packets due to network congestion. When the data link is saturated, store-and-forward can put the data that cannot be forwarded first. In the transceiver's buffer, it waits for the network to be idle before forwarding.
Optical fiber converter is a converter that converts serial port or other interface into optical fiber interface. It is divided into multi-mode fiber conversion and single-mode fiber conversion; general multi-mode fiber converters have a maximum distance of 4KM; single-mode is 20KM. Single-mode and multi-mode can also be converted to each other to realize the networking function of multi-machine communication and relay conversion.
The above is all about the characteristics of photoelectric converters and the differences between photoelectric converters and fiber optic transceivers. Generally speaking, fiber optic transceivers are more suitable for optical fiber laying of civil equipment for long-distance data transmission, especially for intelligent communities or fiber to the desktop. Data center network transmission.
