Optical Trends 2013 - Deployment of 100G & Self-Aware Networks
Contributions by Kevin Affolter & Gurpreet Mand, JDSU Optical Communications
Network operators today are indicating that capacity is doubling in their networks every six months. According to IDC, worldwide broadband traffic for both wireline and mobile activity could reach 116,539 petabytes per month by 2015. This continued need for bandwidth is being driven both by more people accessing video via PCs and TVs and also by their increasing use of mobile smart devices to access information anywhere at any time. People around the world now leverage networks as a daily part of how they communicate and share information during both their work and personal lives.
To bolster and speed up network infrastructures, network operators began volume implementations of 100G optical equipment in 2012. 100G took off much more quickly than 40G as all network players bought into to the overarching need for 100G and developed a healthy supply chain with a variety of competing solutions.
Many experts believe 100G will play a central role in transmission much the way 10G did in the past. 100G creates a new baseline for network performance by using bandwidth in an efficient way, it aligns with 100GbE standards and the technology is expected to serve as the foundation for higher transmission line rates in the future. Implementation of 100G started as line cards much like 10G did in its day and the technology will quickly become smaller due to new developments in photonic components that drive down costs and power requirements.
With 100G in full swing in 2013, many will look ahead to 400G for the future. Most agree that 400G will be implemented in two forms,super channels that have four dual-polarization QPSK (quadrature phase shift keying) modulation schemes encoded in the wavelengths and two wavelengths encoded with dual polarization at 16 QAM. Each has its benefits and drawbacks. QPSK modulation provides better performance over long distances but consumes more spectrum within the fiber while the 16QAM has a shorter reach but a more efficient use of spectrum. The 16QAM option will likely be a good fit for areas of high population density such as Europe and the East Coast of the United States where the end-to-end service distances are shorter. The QPSK option will be necessary for areas where distances between major population centers are greater, such as North America.
Along with faster transmission rates, the development of Self-Aware Networks that provide a much more flexible way to manage wavelength traffic also made great strides in 2012. These networks incorporate colorless, directionless, contentionless and flexible spectrum capabilities that let network operators automatically restore and rebalance optical network traffic and quickly provision new services. Optimizing the network in this way also helps them more efficiently manage equipment and operations, all of which result in lower overall costs.
Network operators now fully appreciate the value of Self-Aware networks and are committed to their implementation. Expect to see deployments of these fully featured networks in 2013
Categories:Optical Communications ·
2013 Trends ·