This paper reviews the status of research into elastic optical networks and flexgrid,
illustrating the benefits of new flexible technologies to allow higher network capacities and …

Increased global traffic puts tough requirements not just on fiber communications links but
on the entire network. This manifests itself in multiple ways, including how to optimize …

The increase of new services such as content distribution and interdata center connectivity
poses new requirements on the control and management of next generation networks. The …

This thesis describes novel contributions in the field of physical layer aware optical
networks. IP traffic increase and revenue compression in the Telecom industry is putting a lot …

With the exponential growth of traffic driven by video and Internet services, WDM systems
evolve regularly to increase optical fiber capacity. To meet the relentless need for capacity …

The exponential traffic growth in optical networks has triggered the evolution from fixed-grid
to flex-grid technology. This evolution allows better spectral efficiency and spectrum usage …

Flex-grid technology is an effective means to improve the spectral efficiency of optical
communication. For a given amplifier spectral bandwidth, it gives rise to the increase in the …

Targeted use of low noise ROADMs and Raman amplifiers provide increased network
capacity for minimal additional equipment. For Raman amplifiers with frequency …

Dynamic and flexible optical networks are among the evolution scenarios of the optical
transport networks. These form the basis of the new generation of optical networks of …

Data rate and energy consumption are the major concerns in optical networks. In order to
reduce energy consumption, transport operator networks based on optical circuit switching …