200g Ethernet has become a hot spot in the market due to its higher transmission rate,higher density and lower equipment power consumption.As an important component,200g optical module,200g DAC and 200g AOC are of course also concerned by everyone.
1、200g DAC high speed cable
The 200g DAC high-speed cable mainly includes qsfp56 and qsfp28-dd packages.The difference between the two is that the qsfp56 DAC package uses four transmitting and receiving ports,and the transmission rate of each port is 50g,while the qsfp28-dd DAC package has eight transmitting and receiving ports,and the transmission rate of each port is 25g.It is also compatible with qsfp forward and backward,and can be compatible with existing qsfp28 optical modules and AOC/DAC high-speed cables.
The 200g qsfp56 high-speed cable is divided into three types:200g qsfp56 to qsfp56 DAC,200g qsfp56 to 2x100g qsfp28 DAC and 200g qsfp56 to 4x50g SFP 56 DAC,which are mainly used for the interconnection of computer data centers and cloud servers.
The 200g qsfp28-dd high-speed cable mainly includes 200g qsfp28-dd to 2x100g qsfp28 DAC.One end is connected with one 200g qsfp28-dd module,and the other end is connected with two 100g qsfp28 modules.The cable length is 1m,which is used to connect optical fiber network devices.
2、200g AOC active optical cable
Similarly,the 200g AOC active optical cable is mainly packaged in qsfp56 and qsfp28-dd.Among them,the 200g qsfp56 active optical cable is divided into three types:200g qsfp56 AOC,200g qsfp56 to 2x100g qsfp28 AOC,and 200g qsfp56 to 4x50g SFP 56 AOC,which are mainly used in 200g Ethernet with a transmission distance of 1-100m.
There are three types of 200g qsfp28-dd active optical cables:200g qsfp28-dd to qsfp56 AOC,200g qsfp28-dd to 2x 100g qsfp28 AOC,and 200g qsfp28-dd to 4x 50g qsfp28 AOC,which are used to connect the 200g Ethernet link of the short-distance data center.
3、Respective advantages:
The 200g AOC active optical cable has higher transmission data rate and higher density layout under the same conditions,and can achieve the same transmission rate with relatively low wiring cost.In the short distance(1-5m)equipment interconnection of 200g data center,using 200g DAC high-speed cable has more price advantages than 200g AOC active cable.