How Much Do You Know About 40G Transceiver?

40 Gigabit Ethernet, as the computer networks technology, is mainly used to transmit Ethernet frames at rates of 40 gigabit per second. Now it has become a broad selection of vendors because it is cost-effective and reliable. 40G optical transceiver that is used to plug into network servers and a variety of components including interface cards and switches can be applied in 40 Gigabit Ethernet. It is made up of independent optical transmit and receive channels, and its rate is up to 5 Gb/s.

Recently, 40G transceiver can be divided into different types by different standards. According to its standard form factors, there are some common types: CFP transceiver, CXP transceiver and QSFP transceiver, ect. CFP (C form-factor pluggable) transceiver, with 12 transmit and 12 receive 10-Gbps lanes, can support three 40 Gigabit Ethernet ports. The first generation of CFP, which is of bigger size, is more suitable for singlemode optical fiber cable, and also can match multimode fiber or copper cable. CXP transceiver, whose size is smaller than CFP, can provide 12 channels in each direction as well. It is suitable for multimode optical fiber cable and copper cable. The size of QSFP (quad small pluggable) is similar with CXP. It can provide four transmission channels and receive channels, supporting multimode optical fiber cable and copper cable in 40G Ethernet. In the future, it may support singlemode optical fiber cable.

According to the the definition of Physical Layer Specifications, the interface of it, which is used to connect with the ports of switches, can be divided into various kinds, such as 40GBASE-CR4, 40GBASE-KR4, 40GBASE-SR4,40GBASE-LR4 and so on. The main difference between them lies in the kind of cable they operate on. 40GBASE-CR4 is a port type for twin-ax copper cable. 40GBASE-KR4 is a port type for backplanes. 40GBASE-SR4 (short range) is a port type for multimode fiber and uses 850 nm lasers. 40GBASE-LR4 (long range) is a port type for singlemode fiber and uses 1300 nm lasers. And also, the difference types determine them to be applied in different situations. Taking the 40GBASE-SR4 transceiver and 40GBASE-LR4 transceiver for example, 40GBASE-SR4 transceiver is used to transmit in short distance while 40GBASE-LR4 transceiver is designed for long-hual transmission.

Nowadays, 40G transceiver is s now be widely used in the high performance computing, cloud computing industry, high-density data exchange center and so on. But why there are so many customers choosing it? Besides its comprehensive application and flexible design, the most important factor is the user’s network of actual business requirements. From the market we can see that, as its capability is much better than 10G transceiver and the cost is lower than 100G transceiver, 40G transceiver is the best choice to meet their needs.

As technology advanced, 40G transceiver will be developed further. Faced with the development of 40G optical transceiver modules, Fiberstore produces and sells 40G transceiver with high quality and at reasonable price. If you need 40G fiber optical transceivers, Fiberstore will be your first choice.

Originally published at:http://www.chinacablesbuy.com/how-much-do-you-know-about-40g-transceiver.html