Historically, network technology has largely been “one size fits all”; for example, a transmitter
card generates a single data rate with a specified optical reach. The flexible approaches …

The rapid growth in communications and internet has changed our way of life, and our
requirement for communication bandwidth. Optical networks can enable us to meet the …

Optical networks are undergoing significant changes, fueled by the exponential growth of
traffic due to multimedia services and by the increased uncertainty in predicting the sources …

There is a growing awareness that the utilized bandwidth of deployed optical fiber is rapidly
approaching its maximum limit. Given the possibility for such capacity crunch, the research …

There is growing recognition that we are rapidly approaching the physical capacity limit of
standard optical fiber. It is important to make better use of optical network resources to …

In this prolog, we have offered an inkling of some of the driving issues in the quest for high
data rates in optical communications lines. The tutorial covers the vast area of R&D in …

Emerging technologies such as spectrally efficient multicarrier higher order modulation and
bandwidth variable wavelength selective switches have led to a change in the optical …

This chapter reviews the basics of Dense Wavelength Division Multiplexing (DWDM) and
shows how this will be superseded by a more flexible use of the optical fibre spectrum …

Optical transport networks are progressively being designed around reconfigurability.
Operators require an infrastructure capable of carrying large amounts of data, but also able …

Driven by future (beyond 5G and 6G) services and applications, optical networks are
required to support an ever increasing and more dynamic data traffic in a flexible and …