Optical networks are the basic architecture by which the Internet can reach every single place on earth. DWDM (Dense Wavelength Division Multiplexing) networks are the best instrument to let a large number of users access the Web over a single pair of fiber cables, using optical technologies. The cost of new fiber cables is always too high for any company when compared to the more convenient and scalable solution of an optical multiplexer.
The first part of the book includes some tests on the Ericsson’s Optical Add-drop Multiplexer, which have been faced in order to implement an optical core connecting the Information Engineering Department to the national CNR throughout the city of Pisa (Italy).
A second part treats the actual evolution and the marketing of optical fiber and backbone networks in the age of the Internet.
