This book provides a comprehensive account of fiber-optic
communication systems. The 3rd edition of this book is
used worldwide as a textbook in many universities. This 4th
edition incorporates recent advances that have occurred, in
particular two new chapters. One deals with the advanced modulation
formats (such as DPSK, QPSK, and QAM) that are increasingly being
used for improving spectral efficiency of WDM lightwave systems.
The second chapter focuses on new techniques such as
all-optical regeneration that are under development and likely to
be used in future communication systems. All other
chapters are updated, as well.