China metro optical transmission network to achieve 400G and OTN switching technology

Recently, PMC released its latest DIGI-G4 - the latest generation OTN chip. Zhang Tianyu, head of PMC China R & D center and director of Communications Products Division, introduced that DIGI-G4 is the first single chip with the highest density in the industry and supports 400G. In addition, a large number of devices are integrated on a board by a large number of device manufacturers, causing high power consumption to increase the cost. However, the DIGI-G4 integrates the peripheral devices with a reduction of 50% power consumption per 100G port.

During the interview, PMC DIGI-G4 product line manager Kevin said that PMC developed the chip completely in response to market demand, which means that the rapid growth of bandwidth every two years will have to double the bandwidth, which is the world Such a trend. On the other hand, 100G become the standard has become a trend, this standard is mainly in the backbone network, including China Mobile, telecommunications networks such as basically concentrated in the backbone, the operators are sure to the metropolitan area, these bandwidth From the metropolitan area, the demand for network access increases, the bottleneck is the MAN backbone network.

In addition to the bandwidth requirements, it is the data center needs. Kevin stressed that very large-scale data center, they want to complete the interconnection between data centers. DIGI-G4 chip design at the beginning with Google, AMAZON have conducted technical exchanges, they are particularly pressing need is encrypted. Optical layer encryption is not enough, mainly because we have encryption in the business layer, our DIGI-G4 chips can be 100G OTN encryption protection, not only in the 100G encryption, I can 100G in my entire sub-rate business level Can be encrypted.

Zhang Tianyu said here need to emphasize a concept, OTN switching is actually the concept of OTN electricity cross, think back four to five years ago when the mainstream OTN in the backbone network, or branch line technology, in fact, that is Over the past couple of years OTN electricity crossover has become the mainstream. In the past few years, we can see that operators are turning their tactics deployed one by one into the OTN exchange from the previous branch. China is at the forefront of China's OTN Deployment is ahead of the world, and we see a clear trend around the world. Nine of the top ten operators in the world have fully deployed OTN-based cross-connect networks, and have fully witnessed this technology to bring to operators' businesses flexibility.

At present, it is not enough for the chip supplier to provide a chip to the equipment manufacturer, the cost pressure is pushed down from the carrier level, and the R & D investment is also controlled by the equipment operator. In the past, a huge software R & D team It has become unrealistic to make such a transmission device, so a great deal of reliance is on chip makers to provide them with a complete set of software packages as they are released, enabling them to complete their development within a short period of time.

Zhang Tianyu finally said that PMC continues to invest in software. The company's software engineers now account for more than hardware engineers. We provide very complete software packages, and after actual deployment verification, reduce the secondary development of equipment manufacturers.