Fady Masoud is Senior Advisor for Technical Marketing at Ciena Portfolio Solutions group, and brings 18 years of expertise and insights on architecture and requirements of next-gen optical platforms.

This is the second post in a series highlighting OTN technologies. Other posts in the series:

The adoption of Optical Transport Network (OTN) technology continues to gain momentum in the market. This is attributable to the significant leap forward in optical network technology that OTN represents and the increasing obsolescence of SONET/SDH networking.

By playing a key role in making the network an open and programmable platform, by making it possible for transport to be as important as computing and storage in data center applications, OTN technology helps us solve our customer’s toughest business challenges.

A recent publication from Ciena’s Expert Series, The Experts Guide to OTN offers up a list of 7 key OTN benefits that can be leveraged by service providers and carriers to improve optical networking, reduce costs, and broaden their service catalog. These benefits include:


1) Reduction in transport costs. Transporting multiple clients on a single wavelength, while preserving their specific requirements, reduces the overall cost of transport and ensures efficient bandwidth utilization.

2) Scalability beyond 40G. Previous generation transport technologies such as SONET/SDN were not designed for packet-dominated, high-capacity services at speeds of 100G and above. OTN is designed and optimized to support massive capacity services such as 100GbE, 400G, and even Terabit payloads as needed.

3) Determinism. Dedicated specific and configurable bandwidth guarantees network capacity and managed performance for each client without contention between concurrent services or users.

4) Virtualized network operations. Partitioning an OTN-switched network into private network partitions (Optical Virtual Private Networks or O-VPNs) provides a dedicated, independent set of network resources to each client.

5) Flexibility. Operators can employ the technologies needed to support current transport demands, while also enabling future adoption of new technologies as business needs dictate. Moreover, OTN allows faster service provisioning and quicker time to revenue

6) Secure by design. OTN-channelized links and hard partitioning of traffic onto dedicated circuits ensures a high level of privacy and security, effectively stopping hackers who access one part of the network from intercepting data or gaining access to other areas. 

7) Dynamic infrastructure. Working together, OTN and the control plane allow the network to become dynamic and responsive to upper-layer applications in real time, thus making possible emerging services such as on-demand/scheduled cloud interconnections where the control plane negotiates with the cloud operating system.


With billions of network-connected consumer devices operating around the globe, the way we push content to users has evolved. The demand for OTN is growing; no other technological solution allows operators to turn up the volume on new services faster and more efficiently while removing the cost of uncertainty from the future equation.

Are you ready to take the next step in evolving both your network and your knowledge? Download the free eBook, The Experts Guide to OTN, and increase your value to your organization by becoming an OTN expert.