Single Mode Fiber Transceiver
Automobile Motor,Gear Selector Motor,Roadster Gear Selector Motor,Smart Car Gear Selector Motor Chengdu Huachuan Electric Parts Co., Ltd. , https://www.chcd-global.com
January 28 14:12:23, 2020
With the advancement of network technology, many occasions require the long-distance transmission of optical fiber transceivers. As a result, foreign and domestic manufacturers of optical fiber transceivers are very numerous, and their product lines are extremely rich.
The type of optical transceiver is also very complicated. The development of optical fiber networks has become an inevitable trend. Therefore, today's enterprises directly use optical fibers as their transmission medium to establish backbone networks when they construct their own networks. Many enterprises also upgrade their existing networks based on business needs. However, due to funding, manpower, or time considerations, many business users urgently need a cheap solution that can not only reduce costs, but also allow the original equipment to get maximum protection. So many companies' practice is that the backbone network is optical fiber, and the transmission medium of the internal LAN is generally copper wire, double glue line. But how to connect the LAN to the fiber backbone? This requires switching between different ports, different lines, and different fibers and guarantees link quality. A fiber optic transceiver is an Ethernet transmission media conversion unit that exchanges short-distance twisted-pair electrical signals and long-distance optical signals. It is also called a photoelectric converter or fiber converter in many places. ).
Simply speaking, one end of the fiber optic transceiver is connected to the optical transmission system, and the other end (user end) comes out with a 10/100M Ethernet interface. The main principle is that it is achieved through optical coupling, and there is no change in the coding format of the signal. Optical fiber transceivers provide ultra-low latency data transmission, complete transparency of network protocols, use of dedicated ASIC chips to achieve data line speed forwarding, and devices that use 1+1 power supply design, etc., and support ultra-wide power supply voltages. Realize power protection and automatic switching. At the same time, it supports an ultra-wide working temperature range and supports a complete transmission distance of 0 to 120 kilometers.
Single-mode transceivers can range from 20 km to 120 km. It should be pointed out that due to the difference in transmission distance, the transmit power, receiving sensitivity, and the use wavelength of the optical fiber transceiver itself will also be different. For example, the transmission power of a 20-km optical fiber transceiver is generally between -15 to -7 dB, the receiving sensitivity is -30 dB, and the wavelength of 1310 nm is used; while the transmitting power of a 120-km optical fiber transceiver is mostly between -5 and 0 dB, and the receiving sensitivity is For -38dB, use a wavelength of 1550nm.
The types of fiber optic transceivers are very complex. According to the rate, optical transceivers can be divided into single 10M, 100M fiber transceivers, 10/100M adaptive fiber transceivers, and 1000M fiber transceivers. According to the structure, it can be divided into desktop (stand-alone) fiber optic transceivers and rack-mounted fiber optic transceivers. Divided by optical fiber, can be divided into multimode fiber optic transceivers and single mode fiber optic transceivers. According to the number of optical fibers, they can be divided into single-fiber optical transceivers and dual-fiber optical transceivers. According to the network management, it can be divided into network management fiber transceivers and non-network management fiber transceivers. In general, fiber optic transceivers will continue to develop in the direction of high intelligence, high stability, network management, and low cost. At the same time, in order to ensure full compatibility with network devices such as network cards, repeaters, hubs, and switches of other manufacturers, fiber transceiver products must strictly comply with 10Base-T, 100Base-TX, 100Base-FX, IEEE802.3, and IEEE802.3u, etc. Ethernet standards, otherwise the distance that can be connected will be shortened. The EMC immunity against electromagnetic radiation should also comply with FCC Part 15 standards. In addition, there are many aspects to be aware of and pay attention to when purchasing.