The difference between 25G high-speed cable and 25G active optical cable

25G high-speed cable and 25G active optical cable can maintain 25Gbps transmission data, but what is the difference between them? ZR Cable explains 25G DAC and 25G AOC in detail for you.

1. What is 25G QSFP28 DAC high-speed cable:

The 25G high-speed cable is made of gold-plated conductors and polyurethane foam insulation copper core cables, which have high-quality attenuation coefficient characteristics and low-time characteristics, so that the data signal transmission is appropriate and accurate, and the transmission rate can be improved. It is an alternative to optical modules. The short-circuit connection solution is much more cost-effective than the same type of optical modules, and it has been generally warmly welcomed in the application of short-circuit connection.

25G SFP28 to SFP28 DAC is a cost-effective solution for short-circuit external link transmission. It can create a 25G external link according to the SFP28 port number of the network switch, which conforms to the IEEE P802.3by and SFF-8402 SFP28 specifications. It is widely used in big data center or data center system software scenarios.

2. What is 25G QSFP28 AOC active optical cable:

25G active optical cable can get rid of the bandwidth limitation of traditional high-speed cables, and this type of 25G active optical cable can provide an ideal replacement solution for high-speed cables and short-circuit SFP28 optical modules, and the data signal is more detailed. , has higher characteristics, so it is widely used in the large data center Internet with high-speed transmission, density and power consumption.

25G AOC active optical cable can only be 25G SFP28 AOC. The transmission distance of 25G SFP28 AOC when used together with OM3 multimode fiber reaches 70m, and when used together with OM4 multimode fiber, the transmission distance reaches 100m. It is suitable for short-circuit data communication and interconnection applications, and is used for sound card racks and adjacent sound cards. Connections in the middle of the racks provide an economical approach.

3. Comparison of the advantages of 25G high-speed cable and 25G active optical cable:

25G high-speed cable can be used for transmission speeds up to 25Gbps, which is higher than that of traditional copper cables for database transmission; 25G active optical cables are suitable for 25G and 10G Ethernet interfaces, high-capacity IO and SFP+ sockets, large data centers and sound cards The racks are connected to each other.

The volume and net weight of the 25G active optical cable are respectively one-half and one-fourth of the 25G high-speed cable, so the 25G active optical cable is much lighter than the 25G high-speed cable; there is no need to upgrade the machine and equipment, the 25G active optical cable It has a freight volume of up to 25Gbps; the transmission characteristics and bit error rate of the 25G active optical cable are also better, and the BER reaches 10-15; the transmission output power of the 25G active optical cable on the external chain of the system software is lower.

4. The structure of 25G DAC high-speed cable and 25G AOC active optical cable:

The 25G high-speed cable is composed of a copper cable and optical fiber receiving and sending equipment on both sides. The connector it uses is similar to the socket of the optical module, but the RF connector control module on the high-speed cable does not have an expensive laser. generator, thus greatly reducing the cost of short-circuit use.

The 25G active optical cable is composed of optical fiber receiving and transmitting equipment on both sides and OM3 or OM4 multimode fibers of different lengths. The receiving and transmitting equipment on both sides can perform optical conversion and optical transmission, which ensures the reliability of transmission data. Sexuality and coordination of use.

5. Application of 25G DAC high-speed cable and 25G AOC active optical cable:

The 25G high-speed cable is suitable for network switches/wireless routers/HBAs, network servers and database storage devices, 40Gbs/100GBS Ethernet interfaces, and optical fiber security channels.

The 25G active optical cable is suitable for interconnecting 25G and 10G Ethernet interfaces, high-capacity IO and SFP+ sockets, large data centers and sound card racks.

The optical communication 25GCN2 direct connection cable can meet the customer's requirements for 25G Internet construction. In summary, the use of SFP28 DAC/AOC cable in the 25G Internet short-circuit outer chain has the advantages of high cost performance.

ZR Cable focuses on the research and development and sales of optical fiber communication products. Optical communication products include standard product optical cables, optical fiber jumpers Cables, mpo/mtp data centers, optical fiber distribution frames, etc., at ZR Cable you can buy all optical communication products in one stop.