The network technology deployed in ICP data centers has been upgraded from 10G to 400G in the past five years.
With the growth of demand for data centers and cloud computing resources, it has driven the development of super-large-scale public cloud data centers. The continuous increase in global data traffic has prompted the development of data centers from 100G optical transceiver to higher speeds, larger bandwidths, and lower latency. 400G transceiver market will be the direction of the next-generation backbone network upgrade and new construction, and it will become an inevitable trend for data centers. And 400G optical transceiver plays a vital role in the process of building a 400G network system.
1>Increase the bandwidth of the data center and storage capacity;
2>Increase the access speed of each port from 25G to 100G;
3>Improve the power efficiency but reduce the cost.
The 400G optical module plays an important role in building a 400 Gbit/s network system. The 400G optical module improves the data throughput and maximizes the bandwidth and port density of the data center. The future trend of 400G optical modules is to achieve wide gain, low noise, miniaturization, and integration. Under the current market background, the 400G transceiver market has become the best choice for large data centers to improve system performance and reduce bandwidth costs.
1>The power consumption has increased nearly three times since speed has increased four times compared with 100G optical trasnceivers. But there's no way to reduce it and heat dissipation for now.
2>The price is three times than the sum of the prices of four 100G optical transceivers.
The 400G transceiver is mainly used for photoelectric conversion. Electrical signals are converted into optical signals at the transmitter end and then transmitted through optical fibers. Optical signals are converted into electrical signals at the receiver end.
QSFP-DD: (Quad Small Form Factor Pluggable-Double Density) four-channel Small Pluggable package is a high-speed Pluggable module package defined by QSFP-DD MSA team, which is the first choice for 400G optical module package. Enable data centers to effectively grow and scale cloud capacity as needed.
OSFP: the full name is Octal Small Formfactor Pluggable, Octal refers to 8, Octal meaning, also means to directly use 56G electrical signal, 856GbE, but the 56GbE signal is formed by 25G DML laser under PAM4 modulation. Is a new pluggable package with eight high-speed electrical channels that will initially support 400Gb/s(8x50G). The volume of OSFP is more than twice that of QSFP-DD.
CFP8: CFP8 and QSFP-DD maximum bandwidth is 400Gb/s, but CFP8 only supports 400Gb/s(16x25G or 8x50G), while QSFP-DD supports 200Gb/s(8x25G) and 400Gb/s(8x50G).