ExperTech Series: Introduction to DWDM

Dense wavelength division multiplexing (DWDM) isn’t just for long-haul systems anymore. Using DWDM adds an important new dimension to existing fiber networks.

This course begins with a look at the bandwidth drivers that will determine the coming requirements for this novel technology, and consider the business case for its deployment. We review fiber-optic technology with an emphasis on the characteristics of particular fiber types used to support DWDM technology, as well as the workings of a DWDM system. Also discussed are DWDM technologies, such as fiber amplifiers and optical add/drop multiplexing systems, keeping in mind the impairments that can limit DWDM transmission distances and speeds. Finally, participants consider DWDM network configurations and architectures with a focus on the real-world applications of this promising new technology.