The function of the Optical Module is to convert electrical signals into optical signals at the transmitting end, and then transmit them through optical fibers, and then convert the optical signals into electrical signals at the receiving end. Simply speaking, it is a photoelectric conversion device. In terms of size, it is small in size and looks a bit like a USB flash drive for the first time. Although it is not big, it plays a very crucial role in 5G construction.
Traditional data centers are mainly based on 10G network architecture. However, with the continuous growth of data traffic, data centers are facing greater pressure. Therefore, it is imperative to upgrade related equipment. In the 5G era, the number of base stations will bring a big explosion. At the same time, due to the rapid and violent growth of data in the 5G era, the performance and quantity of optical modules will increase greatly.
The 400G hot-swappable optical module is called CDFP. There are three generations of CDFP in history, which are divided into two card slots, half transmitting and half receiving. Lots of standards of 10G, 40G, 100G, 400G optical module are proposed by the IEEE 802.3 working group. In addition, there is an MSA protocol. The biggest difference from IEEE is that the multi-source agreement MSA is more like a private non-official organization, and different MSA agreements can be formed for different optical module standards. Optical module standards have been standardized. Today, optical modules are unified in structural packaging, product size, and interface methods.
At present, data center operators such as Amazon, Microsoft, Google, and Facebook are rapidly building their own data centers to increase the transmission rate by using 100G/400G optical modules. Construction costs, space usage, and operating power consumption are all issues that operators have to face squarely. In addition to the requirements on the optical module, the cloud data center also needs to increase the data throughput on the installed optical fiber, so as to maximize the function of the data center.
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