This book provides the first industry-oriented, comprehensive coverage on DWDM network designs and engineering solutions. There is no one source that explains the details of designing/building a DWDM network from the ground up. DWDM Network Designs and Engineering Solutions is an all-out practical approach that teaches the reader new technologies and ways to plan, design and build their networks in a real time environment. Each chapter begins familiarizing the reader with new technologies and then helps implement the same in practical, real-world case studies. This book enables network designers to tap the huge bandwidth offered by the fiber to the fullest and makes the vision of an Optical Internet come true.