WDM Technologies: Active Optical Components is an excellent resource for engineers and researchers engaged in all aspects of fiber optics communication, such as, optoelectronics, equipment/system design, and manufacturing. The book is also a resource for graduate students and scholars interested in these rapidly growing fields. - Provides the reader with insight and understanding for key active optical components frequently being / to be used in the optical communication systems, essential building blocks of today's/next generation fiber optic networks- Allows engineers working in optical communication area, (from system to component) to understand the principle and mechanics of each key component they deal with for optical system design- Covers different laser diodes as transmitter and pumping sources, different modulators, and different photodetectors