With the increasing demand of network throughput and bandwidth, the demand of 40G network interconnection also increases. At present, the optical transmission products for 40G network mainly include 40G QSFP+ optical module, 40G QSFP+ AOC active optical cable, 40G QSFP+ DAC high-speed cable. With the increasing demand of network throughput and bandwidth, the demand of 40G network interconnection also increases. At present, the optical transmission products for 40G network mainly include 40G QSFP+ optical module, 40G QSFP+ AOC active optical cable, 40G QSFP+ DAC high-speed cable. In the short-distance transmission scheme, 40G QSFP+ DAC high-speed cable and 40G QSFP+ AOC are two products used more, both of which have their own advantages. DAC high-speed cable or AOC active optical cable can be selected according to transmission distance.

The 40G QSFP+ AOC active fiber optic cable is an ideal interconnection solution for 40G network when the transmission distance is more than 7m and within 100m. If the transmission distance exceeds 100m, the optical signal of 40G QSFP+ AOC will gradually weaken. At present, there are two products of 40G QSFP+ AOC active optical cable, which are 40G QSFP+ AOC active optical cable and 40G QSFP+ to 4 * 10G SFP + AOC active optical cable. Next, ETU-LINK will introduce the two products and their applications.

Product introduction

1、40G QSFP+ AOC active optical cable

The 40G QSFP+ AOC active optical cable is adopted hot pluggable QSFP28. It is a four channel full duplex active optical cable. The maximum speed of each channel is as high as 11.3gbps, and the maximum transmission distance through OM3 multimode optical fiber can reach 100m.

2、40G QSFP+ to 4*10G SFP+ AOC active optical cable

The 40G QSFP+ to 4 * 10G SFP+ AOC branch active optical cable is adopted hot pluggable QSFP+ and SFP+, and is a 4-channel full duplex active optical cable (including one 40G QSFP+ module and four 10G SFP+ Modules). It conforms to QSFP+ MSA, SFP+ MSA, IEEE 802.3ba 40Gbase-sr4 Ethernet and IEEE 802.3ae 10Gbase-sr Ethernet standards, with a maximum speed of 41.25gbps, and can realize interconnection up to 100m through OM3 multimode fiber (cable length can be customized).

Fiber length range

The maximum transmission distance of 40G QSFP+ AOC active optical cable used with OM3 provided by etu-link can reach 300m, and the maximum transmission distance of 40G QSFP+ Zhuan 4 * 10G SFP + AOC branch active optical cable is 100m. The length of optical fiber can be customized according to customers' requirements.

Application scenarios

The application scenarios of 40G QSFP+ AOC active optical cable are mainly 40G data center computer room and cloud computing system.

In the application of 40G short-distance network transmission, compared with 40G optical module, 40G AOC active optical cable has no insertion loss and return loss, low material cost and maintenance cost, and no additional fiber jumper is required, which can help users save more costs. Therefore, 40G AOC is the best choice for 40G data center equipment interconnection within 100m range.